U.S. patent application number 16/751657 was filed with the patent office on 2020-07-30 for floor treatment apparatus.
This patent application is currently assigned to Karcher North America, Inc.. The applicant listed for this patent is Karcher North America, Inc.. Invention is credited to Jared Adams, Scott Pyne, Daniel Venard.
Application Number | 20200237177 16/751657 |
Document ID | 20200237177 / US20200237177 |
Family ID | 1000004620059 |
Filed Date | 2020-07-30 |
Patent Application | download [pdf] |
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United States Patent
Application |
20200237177 |
Kind Code |
A1 |
Venard; Daniel ; et
al. |
July 30, 2020 |
FLOOR TREATMENT APPARATUS
Abstract
The present disclosure relates generally to an apparatus for
cleaning or otherwise treating a floor or ground surface. Devices
provided herein include various features to enhance the efficiency
and efficacy of cleaning operations. Such devices includes, but are
not limited to, bearing protector devices, cord and cable
management devices, and ergonomic features useful with ride-on
floor treating machines.
Inventors: |
Venard; Daniel; (Centennial,
CO) ; Pyne; Scott; (Englewood, CO) ; Adams;
Jared; (Aurora, CO) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Karcher North America, Inc. |
Denver |
CO |
US |
|
|
Assignee: |
Karcher North America, Inc.
Denver
CO
|
Family ID: |
1000004620059 |
Appl. No.: |
16/751657 |
Filed: |
January 24, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62796530 |
Jan 24, 2019 |
|
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A47L 11/282 20130101;
B08B 1/002 20130101; A47L 11/32 20130101; A47L 11/24 20130101; A47L
11/4041 20130101; B08B 1/04 20130101; A47L 11/19 20130101 |
International
Class: |
A47L 11/40 20060101
A47L011/40; B08B 1/04 20060101 B08B001/04; B08B 1/00 20060101
B08B001/00; A47L 11/19 20060101 A47L011/19; A47L 11/282 20060101
A47L011/282; A47L 11/24 20060101 A47L011/24; A47L 11/32 20060101
A47L011/32 |
Claims
1. A floor treatment and cleaning device comprising: a chassis
member operable to support cleaning device components; a cleaning
deck operable to selectively receive a roller brush; a roller brush
having a first end, a second end, and a longitudinal axis, and
wherein the roller brush is rotatable relative to at least one of
the chassis member and the cleaning deck; wherein the roller brush
comprises a plurality of bristles extending therefrom; a stationary
brush provided proximal to a first end of the roller brush, and
wherein the stationary brush comprises bristles that are operable
deflect debris.
2. The floor treatment and cleaning device of claim 1, wherein the
bristles of the stationary brush are substantially perpendicular to
the longitudinal axis of the roller brush.
3. The floor treatment and cleaning device of claim 1, wherein at
least one of the first end and the second of the roller brush is
selectively connected to a bearing assembly.
4. The floor treatment and cleaning device of claim 3, wherein the
stationary brush is provided at least partially between the roller
brush and the bearing assembly.
5. The floor treatment and cleaning device of claim 1, wherein the
second end of the roller brush is provided in communication with a
drive member and the first end of the roller brush is connected to
a bearing assembly to allow rotation of the brush.
6. The floor treatment and cleaning device of claim 1, further
comprising a plurality of wireframe guard members, wherein at least
portions of the wireframe guard members extend perpendicularly
relative to the longitudinal axis of the roller brush and wherein
the wireframe guard members are operable to prevent a carpet from
being drawn into the device.
7. The floor treatment and cleaning device of claim 1, wherein the
plurality of bristles extending from the roller brush are provided
in a helical distribution.
8. A floor treatment and cleaning device comprising: a cartridge
member operable to selectively and rotatably receive a first roller
and a second roller; a first roller brush and a second roller
brush, wherein the first roller brush and the second roller brush
each comprise a longitudinal axis; the first roller brush being
spaced apart from the second roller brush, and wherein the
longitudinal axis of the first roller brush extends parallel to the
longitudinal axis of the second roller brush; the first roller
brush and the second roller brush each comprising a plurality of
bristles extending therefrom; wherein at least one of the first
roller brush and the second roller brush is rotatably connected to
a bearing assembly; a stationary brush provided proximal to the
bearing assembly, wherein the stationary brush is operable to
contact and deflect debris provided on at least one of the first
roller, the second roller, the plurality of bristles, and the
bearing assembly to prevent ingress of the debris into the bearing
assembly.
9. The floor treatment and cleaning device of claim 8, wherein the
stationary brush comprises a selectively removable brush.
10. The floor treatment and cleaning device of claim 8, wherein the
device comprises a cleaning deck and the cartridge member is
selectively connected to the cleaning deck.
11. The floor treatment and cleaning device of claim 8, wherein the
stationary brush comprises bristles that extend in a direction
substantially perpendicular to the longitudinal axis of the first
roller brush and the second roller brush.
12. The floor treatment and cleaning device of claim 8, wherein the
stationary brush is selectively connected to the cartridge
member.
13. The floor treatment and cleaning device of claim 8, wherein the
stationary brush is provided at least partially between the first
roller brush and the bearing assembly.
14. A floor treatment and cleaning device comprising: a roller
brush having a first end, a second end, and a longitudinal axis,
and wherein the roller is rotatable about the longitudinal axis;
wherein the roller brush comprises a plurality of bristles
extending therefrom; a stationary brush provided proximal to a
first end of the roller brush, and wherein the stationary brush
comprises bristles that extend substantially perpendicularly
relative to the longitudinal axis, the stationary brush being
operable to deflect and contain dirt and debris displaced by the
roller brush.
15. The floor treatment and cleaning device of claim 14, wherein
the stationary brush comprises a rigid base and the bristles extend
from the rigid base.
16. The floor treatment and cleaning device of claim 15, wherein
the rigid base is selectively securable to the cleaning device.
17. The floor treatment and cleaning device of claim 14, wherein at
least one of the first end and the second of the roller brush is
selectively connected to a bearing assembly.
18. The floor treatment and cleaning device of claim 17, wherein
the stationary brush is provided at least partially between the
roller brush and the bearing assembly.
19. The floor treatment and cleaning device of claim 14, further
comprising a plurality of wireframe guard members, wherein at least
portions of the wireframe guard members extend perpendicularly
relative to the longitudinal axis of the roller brush and wherein
the wireframe guard members are operable to prevent a carpet from
being drawn into the device.
20. The floor treatment and cleaning device of claim 14, wherein
the plurality of bristles extending from the roller brush are
provided in a helical distribution.
Description
[0001] This U.S. Non-Provisional patent application claims the
benefit of priority from U.S. Provisional Patent Application Ser.
No. 62/796,530, filed Jan. 24, 2019, the entire disclosure of which
is hereby incorporated by reference.
[0002] This application is related to U.S. patent application Ser.
No. 15/676,745, filed Aug. 14, 2017, which is a Continuation of
U.S. patent application Ser. No. 15/248,560 which is a Continuation
of U.S. patent application Ser. No. 15/245,488, filed Aug. 24,
2016, which is a Continuation of U.S. patent application Ser. No.
14/643,768, filed Mar. 10, 2015, which is a Continuation of U.S.
patent application Ser. No. 13/964,046, filed Aug. 10, 2013, now
U.S. Pat. No. 9,015,887, which is a Continuation of U.S. patent
application Ser. No. 13/888,140, now U.S. Pat. No. 8,528,142, filed
May 6, 2013, which is a Continuation of U.S. patent application
Ser. No. 13/554,593, now U.S. Pat. No. 8,438,685, filed Jul. 20,
2012, which is a Divisional of U.S. patent application Ser. No.
11/868,353, now U.S. Pat. No. 8,245,345, filed Oct. 5, 2007, which
is a Continuation of U.S. patent Ser. No. 11/059,663, now U.S. Pat.
No. 7,533,435, filed Feb. 15, 2005, which claims the benefit of
U.S. Provisional Patent Application Ser. Nos. 60/545,153 and
60/627,606, filed Feb. 16, 2004 and Nov. 12, 2004, respectively,
and which is a Continuation-In-Part of abandoned U.S. patent
application Ser. No. 10/737,027, filed Dec. 15, 2003, which is a
Continuation-In-Part of abandoned U.S. patent application Ser. No.
10/438,485, filed May 14, 2003, the entire disclosures of which are
incorporated by reference in their entirety herein.
[0003] This application is related to abandoned U.S. patent
application Ser. No. 11/253,100, filed Oct. 17, 2005, which is
incorporated by reference in its entirety herein.
[0004] This application is also related to U.S. patent application
Ser. No. 13/589,321, now U.S. Pat. No. 8,397,333, filed Aug. 20,
2012, which is a Continuation of U.S. patent application Ser. No.
12/511,704, now U.S. Pat. No. 8,302,240, filed Jul. 29, 2009, the
entirety of which are incorporated by reference herein.
FIELD OF THE INVENTION
[0005] The present invention relates to an apparatus for the
treatment, such as cleaning, of a surface. More specifically, one
embodiment of the present invention is an apparatus for surface
cleaning that provides a standing or sitting location for the
operator and is capable of operating in tight spaces.
BACKGROUND OF THE INVENTION
[0006] Cleaning machines are used extensively for cleaning flooring
surfaces comprised of tile, stone, brick, wood, concrete, carpets
and other common surfaces. Maintaining the cleanliness of these
surfaces, especially in high volume areas in commercial,
industrial, institutional and public buildings is an ongoing and
time-consuming process. The present invention relates to a highly
maneuverable floor cleaning or treatment apparatus (hereinafter
"treatment apparatus") that supports an operator during use. More
specifically, some embodiments of the present invention are adapted
to clean, sweep, vacuum, burnish, wax, etc. (hereinafter "treat") a
floored surface, wherein the operator is supported by the cleaning
device, thus increasing efficiency and productivity of the cleaning
operation. As used herein, Afloored surface@, or more generally
Asurface@, encompasses areas covered by concrete, tile, carpet,
wood, plastic, stone, turf or any other substance known in the art.
The prior devices address many issues that arise with cleaning such
floored surfaces. Unfortunately, prior to the present invention,
there was no one device that could address many, if not all, of the
issues that arise in cleaning various surfaces in various
environments at any given point in time.
Mop & Bucket Cleaning Devices
[0007] In the past, building maintenance staff and others often
treat surfaces, such as tiled hallways or restroom floors, using
traditional mop and bucket techniques. The bucket may include a
detachable mop ringer and may be positioned on caster wheels to
facilitate easy movement. Depending on the cleanliness of the
equipment, a worker may be able to make a good start in treating a
floor using the mop and bucket approach. However, soon the mop and
fluid in the bucket becomes soiled or otherwise contaminated by
germs and/or bacteria. From that point on, each time the worker
plunges the mop into the bucket and rings the mop, both the mop and
cleaning fluid become more and more dirty/contaminated.
Manually Propelled Cleaning Devices
[0008] The basic cleaning problems associated with the prior art
mop & bucket approach to cleaning a surfaces have generally
been addressed in the art, as shown in U.S. Pat. No. 6,206,980 to
Robinson, entitled AMulti-functional Cleaning Machine,@ which is
fully incorporated herein by reference. This type of cleaning
machine generally includes a manually propelled wheeled body with
two tanks, one concentrated chemical receptacle, a vacuum and
blower motor and a fluid pumping system. Typically, such equipment
includes only a single motor used for both vacuuming soiled fluid
and blowing air that can be used to dry a cleaned surface. While
such equipment is generally maneuverable and is an improvement over
the earlier mop and bucket technology, the system is still labor
intensive and slow. As a result, productivity of cleaning
professionals, when using these type of systems is generally
decreased over what it might be with other type of systems that are
available.
Self-Propelled Walk Behind Device
[0009] Productivity concerns have been addressed in the art by the
creation of certain walk behind floor treatment apparatus. These
apparatus typically have a scrub deck at the machine's front and a
squeegee at its rear. The squeegee has the ability to "swing" or
follow the path of the scrub deck as the machine changes direction.
This type of equipment is generally more efficient in cleaning
large surface areas than either the mop and bucket or the manually
propelled devices. Unfortunately, however, the distance between the
scrub deck and squeegee is relatively great. Also, walkbehinds
typically have relatively wide squeegees. These characteristics
limit such machine's maneuverability and limit the doorways they
can easily pass through. Typical 3' doorway allows a machine with
no more than a 33'' squeegee to fit through without removal.
[0010] Small walk behind floor cleaning apparatus typically include
a scrub deck in the middle of the machine and squeegees at the
machine's rear. In this configuration the squeegee has little or no
ability to swing or follow the path of the scrub deck as the
machine changes direction. Small rider scrubbers typically have
relatively narrow squeegees, and rely on "side squeegees"
(unvacuumized squeegee blades) adjacent to the scrub deck to direct
the water into the path of the main (vacuumized) squeegee. The
problem with these side squeegees is that they do not perform very
well for very long and tend to leave a film of water in turns
because the vacuumized squeegee does not follow the true path of
the scrub deck, only the path of the side squeegees (which leave
the film of water). Finally, side squeegee are typically very heavy
rubber blades and have significant down-pressure applied to them to
direct the water--this makes them expensive and causes significant
"drag" which increases the work for the propel unit and limits
battery run-time. Thus, while more maneuverable than larger walk
behind floor treatment machines, the small machines typically do
not clean as well as the larger machines.
Storage Issues in Prior Art Devices
[0011] Further, known cleaning machines do not provide adequate
onboard storage for cleaning supplies, tools, etc. Likewise, prior
art machines do not often provide a flexible approach to adding
storage facilities for trash and the like when the need for such
arises. Machinery that addresses these issues is therefore
needed.
Self-Propelled Ride-on Devices
[0012] Self-propelled cleaning devices are generally also well
known in the field and are employed to treat large floored
surfaces, such as tiled, concrete or carpeted floors found in
hospitals, department stores, schools, gyms, etc. These devices
generally provide the operator with seating from which he/she can
control operation of the device. These devices are ideal for
cleaning large, open areas because they are capable of containing
large amounts of waste fluids and/or debris without having to
repeatedly perform time consuming fluid replacement or debris
removal. Moreover, because these devices provide the user with
seating, the user does not become prematurely fatigued, increasing
overall worker productivity. Unfortunately, these large ride-on
machines are not particularly well-suited for cleaning smaller,
more confined floor surfaces, which are often found in hallways,
small rooms, or even large rooms which have many obstacles
therein.
[0013] As is well known in the art, smaller self-propelled cleaning
devices are also in existence that are ideal for cleaning the
smaller rooms and hallways. However, smaller devices are usually
pushed or pulled by an operator. Hence, the major drawback of these
devices is that they often rely on operator strength to maneuver
the device. Even if the device is self-propelled, it often employs
manual steering. After a long shift of walking behind a treatment
device, the operator is bound to become fatigued, wherein his or
her attention will deviate from the task at hand, thereby possibly
resulting in uneven treatment to the floored area. Thus, a
subsequent crew may have to return and retouch certain areas that
were not accurately treated during the first operation. In
addition, human errors related to the amount of time a surface is
exposed to a brush, may occur when the operator lingers over a
single area for extended period of time. This situation is never
good for a floor surface. The devices in the art are also difficult
to maneuver and often are not adapted to operate around tight
corners, wherein pre or post cleaning operations must be performed,
thus increasing the time and expense of the entire task.
[0014] Thus, it is a long felt need in the field of floor cleaning
or treatment to provide a device that allows the operator to ride
thereon, and which is adapted to be used in small areas and/or
around tight corners. The following disclosure describes an
improved floor cleaning and treatment device that is adapted for
use in small areas that includes a platform adapted to support the
operator to ensure optimum floor cleaning or treatment.
SUMMARY OF THE INVENTION
[0015] It is one aspect of the present invention to provide a floor
treatment apparatus that is easy to maneuver. More specifically,
one embodiment of the present invention is constructed of a chassis
section that includes an enclosure that houses at least a portion
of the internal components of the treatment device and a location
for installation of devices that are used during cleaning
operations. In addition, one embodiment of the present invention
provides a standing, leaning or sitting location for the operator.
Another embodiment of the present invention is equipped with a
powered steering device that allows for greater maneuverability in
areas with tight corners, thereby ensuring that more of the
flooring surface is treated without having to perform pre or post
treatment operations. More specifically, one embodiment of the
present invention is equipped with a self-propelled wheel and an
easy to use steering device to provide increased maneuverability
around obstacles. One embodiment of the present invention employs
at least one wheel that provides thrust and/or steering capability.
Yet another embodiment of the present invention employs wheels that
are substantially centered under the chassis such that the entire
apparatus is generally capable of 360E rotation without
substantially traversing in any other direction, thus allowing it
to treat tight corners of a surface. It is another aspect of the
present invention to provide a cleaning apparatus that is cost
effective to manufacture. Various aspects of the invention shall
now be described in more detail.
Chassis
[0016] One embodiment of the present invention employs a chassis
section that is designed to protect and house the internal workings
of the apparatus and provide a location for interconnection of
auxiliary treatment devices used therewith. One embodiment of the
present invention employs a chassis that is constructed of rigid
plastic, metal, or other common materials used in the art. The
chassis of this embodiment also is equipped with a platform for the
operator. Alternative embodiments of the present invention employ a
foldable, removable or stationary operator seat. In addition, other
safety features such as pads or belts may be employed to secure the
operator into the cleaning device and thus his/her working
environment.
[0017] It is yet another aspect of the present invention to provide
a chassis with a small envelope. More specifically, one embodiment
of the present invention is small enough to fit into and through
tight spaces. Often facilities that employ the apparatus of the
present invention include narrow doorways, aisles and elevators. In
addition, especially in older buildings that have been retrofitted
to comply with the Americans with Disabilities Act, elevators are
of minimal volume and lifting capability. To fit into small
elevators, the chassis is designed to have the smallest practical
envelope, a distinct advantage over the prior art. Also, the
apparatus of one embodiment of the present invention includes
components that are easily removable or adjustable to reduce the
profile of the apparatus. Thus, the embodiments of the present
invention may be used in various structures.
Steering Mechanism
[0018] Another aspect of the present invention is to provide a
cleaning apparatus that is easy to operate and maneuver. More
specifically, one embodiment of the present invention is equipped
with a steering mechanism that allows for inputs from the operator
to be efficiently communicated to the steering wheels of the
cleaning apparatus. Alternatively, other steering means may be used
to facilitate maneuverability of the treatment apparatus, such as
joy sticks, touch screens, buttons, remote control elements,
etc.
[0019] It is still yet another aspect of the present invention to
provide a cleaning apparatus that is adapted to efficiently clean
areas with tight corners. More specifically, one embodiment of the
present invention is adapted to generally perform 360E turns
without appreciable lateral motion. This embodiment of the present
invention is equipped with a turning mechanism generally under the
center of the chassis with two powered exterior wheels adjacent
thereto that provide power to the chassis to pivot around the
centered wheel. The powered exterior wheels may be independently
controlled by joy sticks, wherein movement thereof send directional
inputs to each wheel. One embodiment of the invention is equipped
with at least one joy stick wherein forward deflection will impart
forward motion, rearward deflection will impart rearward motion,
and a side-to-side deflection will cause the apparatus to turn.
Alternatively, two joy sticks may be used in a similar manner,
wherein rearward deflection of the left joy stick and forward
deflection of the right joy stick will result in a left turn, and
depending on the placement of the powered wheels, perhaps a 360E
left hand turn.
[0020] Another embodiment of the present invention utilizes a
steering wheel, handle bars, a yoke, or similar apparatus for
steering. Embodiments may also include a power-assisted steering
mechanism.
Power Plant
[0021] It is another aspect of the present invention to provide a
treatment apparatus that is powered by commonly used power plants.
More specifically, one embodiment of the present invention employs
an electric motor to power the apparatus. The electric motor may be
powered by batteries, solar energy or an electrical cord attached
to a permanent power source. Alternatively, the present invention
may be powered by an internal combustion engine. Other propulsion
means may also be employed by the present invention without
departing from its scope, as will be appreciated by one skilled in
the art.
Floor Treatment Devices
[0022] One embodiment of the present invention employs a chassis
that houses a fluid pump assembly and a vacuum assembly. The
apparatus further includes at least two tanks, one for retaining a
base cleaning fluid, such as water, and a second for retaining
spent cleaning solution, dry debris, etc. The apparatus may also
include one or more concentrated cleaning chemical receptacles
designed to hold concentrated cleaning chemicals. The receptacles
are preferably stored within a lockable structure, adding safety to
the overall apparatus. These agents can be added to a base cleaning
fluid just prior to application to a surface and as desired to
facilitate cleaning of various surfaces.
Tanks
[0023] As briefly mentioned above, preferably at least one tank is
provided that provides a solution that is directed towards the
flooring surface to be cleaned to facilitate treatment. The tank
may be constructed with multiple compartments wherein waste water
from the surface is contained prior to disposal. More specifically,
one embodiment of the present invention employs a tank that
includes a movable membrane. In this configuration, the clean water
and/or cleaning solution is deposited on a surface and agitated.
Dirty water is next suctioned up and deposited back into a portion
of the tank, thereby moving a membrane accordingly to accept the
dirty water. Such a configuration is disclosed in U.S. Pat. No.
4,759,094, which is herein incorporated in its entirety by this
reference. A similar selectively expandable fluid storage area can
be created by utilizing a collapsible structure, which is placed
inside of the primary fluid tank. This type of arrangement is
disclosed in U.S. Pat. No. 4,196,492, which is also incorporated
herein in its entirety by this reference.
[0024] Clean water can obviously come from an outside source such
as a hose, rather than be stored on board the device. However, in
order to facilitate maneuverability and usability of the present
invention, it is envisioned that the chassis will house or hold at
least one fluid tank and perhaps a plurality thereof.
Cleaning Solutions
[0025] In one type of treatment operation, fluid from the chemical
receptacles flows through a tube to a chemical selector, which may
include a metering valve. The selector preferably has a positive
shut-off position, wherein fluid is prevented from flowing through
the selector regardless of the fluid pressure in a fluid line. The
selector is responsive to input from an operator selection of one
of the several cleaning chemicals. Once a chemical is selected, it
is free to flow through the chemical selector and appropriate
amounts thereof may be provided to one of any number of inlets to a
mixing tee. The amount of chemical allowed to flow may be adjusted
by a metering valve built into the selector or separate from the
selector, in a known fashion. A base cleaning fluid, such as water,
may flow from a fluid tank and through a separate tube to a second
leg of a mixing tee. The cleaning fluid and concentrated cleaning
chemical then mix within the mixing tee to create a cleaning
solution. That solution may then be passed through the selector
outlet to a pressure pump, wherein the cleaning solution may be
pressurized and communicated via appropriate tubing to a dispensing
device. The pump, which draws fluid to and through the selector,
also preferably includes a bypass system to facilitate regulation
of pump pressure. Use of the pump to draw fluid is preferred as it
does not create unwanted pressures in the fluid lines and the
system, in general, is not subject to gravity feeding of fluid.
[0026] A solution may be applied to a surface using any type of
dispensing device. In a preferred embodiment, the dispensing device
or associated solution lines or tubes include an adjustable valve,
which may be used to adjust the pressure and flow of solution
allowed to exit the dispensing device. Because of the
adjustability, the apparatus may be utilized as a pre-cleaner for
various carpet treatments, including spotting or other
treatments.
[0027] By use of the chemical selector, two or more receptacles of
floor treatment chemicals may be fluidly connected to a mixing tee.
In operation, a user is capable of creating any number of cleaning
solutions without the need for adding receptacles or switching
chemical feed lines from one receptacle to another or without
changing metering tips that are easily misplaced, incorrectly
interconnected, or damaged. Thus, the treatment process is safer
because there is less chemical handling. Similarly, use of a
metering valve will allow the operator to create a very precise
floor treatment solution.
[0028] It is preferred that one-way check valves be used throughout
the apparatus. For instance, check valves may be included in:
delivery lines that supply cleaning chemicals to the metering tee;
lines that supply water to the metering tee; lines that supply
cleaning solution to the pump; lines that supply cleaning solution
to the spray gun; or in the metering tee, itself. The check valves
prevent reversal of fluid and prevent contamination of one fluid
with another.
Blower
[0029] The treatment apparatus also may include a modular blower
assembly. The blower assembly may be hand-held and operate
completely apart from the overall cleaning machine. The blower
assembly may be used to dry areas physically separate from where
the apparatus is stored. Because the blower assembly possibly is
separate from the apparatus, it may also be used for other blowing
functions, such as blowing leaves, grass, dirt or other debris. The
blower assembly may be used with a detachable hand nozzle, a
flexible nozzle, an extension wand, etc., thereby increasing the
overall flexibility of the blower assembly. The blower assembly may
utilize an integrated on/off switch and be powered by electricity
supplied by any typical extension cord, including the power source
of the apparatus. The blower may be configured to be stored on the
apparatus in one of any number of convenient ways. It will be
appreciated by one skilled in the art that having a modular blower
assembly of this type is very beneficial to the overall
functionality of a multifunctional floor treatment apparatus.
Storage
[0030] Another aspect of one embodiment of the present invention is
that the chassis includes bins, trays, bays and other storage
devices preferably within easy reach of the operator. The storage
devices provide the operator with substantial flexibility when
cleaning a large building or area that has many types of surfaces
that may need treatment. Also, the apparatus provides for modular
trash/supply bins that may be added to or removed from the
apparatus quickly and easily so that the machine can be configured
for one of any number of floor treatment activities.
Primary Pump
[0031] It is yet another aspect of the present invention to provide
an apparatus equipped with a secondary fluid pump that supplies
fluid to the main fluid pump prior to ignition. More specifically,
one embodiment of the present invention includes a secondary, or
priming pump, which is activated prior to the activation of the
main fluid pump. Often it is desirable to introduce fluid into a
main fluid pump prior to that pump's activation, thereby expelling
trapped air that may cause damage to the main fluid pump motor from
vapor lock or cavitation, for example. This priming process may be
conducted manually, but that is time consuming, wherein the user
manually adds fluid to the pump or bleeds the air therefrom.
Alternatively, and preferably, one embodiment of the present
invention is equipped with a secondary pump that is activated for a
brief moment when the fluid discharge apparatus is initially
activated, thus ensuring that the main fluid pump will be
substantially free of trapped air upon activation.
Squeegee
[0032] It is another aspect of the present invention to provide a
device that includes a squeegee adjacent to the floor treatment
device, both generally in the middle of the machine. The squeegee
effectively swings, or follows the path of the floor and does not
rely on unvacuumized side squeegees to channel water to the main
vacuumized squeegee. Thus, it offers as good or better fluid
pick-up when the apparatus is turning than is capable with a walk
behind scrubber, and far superior than typical small riders since
it does not rely on smearing side squeegees. One embodiment of the
present invention, employs a squeegee that pivots about the
steering axis with a linkage that is supported by a roller and
track mechanism. The absence of side squeegees mean less drag and
better use of available energy. In addition, some embodiments of
the present invention include an adjustable squeegee, a skirt or a
shroud that minimally contacts the floor, thus reducing drag and
sparing battery charge. Alternatively, some embodiments of the
present invention include stops that contact the floor, without
marring the same.
Use of the Device
[0033] Various aspects of the inventions discussed briefly above
combine to provide an effective and efficient tool, useful in the
treatment of numerous areas in and around commercial, industrial,
institutional and public buildings. Moreover, due to the various
aspects of the present invention, a sanitation maintenance worker
may clean a particular room or facility more efficiently than
previously possible. The present invention may be used in various
cleaning operations such as burnishing, vacuuming, scrubbing,
sanding, waxing, sweeping, sealing, painting, polishing, etc. In
order to accomplish these tasks, the present invention may be
equipped with various combinations of floor treatment devices. More
specifically, one embodiment of the present invention is equipped
with a plurality of brushes and squeegees to agitate and collect
debris from a flooring surface. In addition, suction mechanisms may
be employed such that fluids and/or dry particulate matter are
transferred into a container. It is also envisioned that one
embodiment of the present invention include at least one solution
applicator positioned adjacent to the scrub brushes, wherein
solution is injected onto the surface after, or prior to, agitation
by the brushes. The debris-entrained solution is then collected by
the squeegee and subsequently vacuumed into the holding tank or
expelled out of the chassis to an outside reservoir. The brushes
and/or solution used in this embodiment may be adapted to clean,
sweep, paint, burnish, sand, strip, varnish or wax a floor. It will
be appreciated by one skilled in the art that any type of solution
adapted to treat any flooring surface may be employed without
departing from the scope of the present invention.
[0034] It is yet another aspect of the present invention provide a
floor treatment apparatus that can be used in various floor
maintenance operations. More specifically, one embodiment of the
present invention is adapted for interconnection to a plurality of
devices to perform a variety of floor treatment operations. It is
envisioned that one embodiment of the present invention be capable
of quick removal of certain treatment devices such that different
devices may be then added to quickly change the scope of the
apparatus, thereby providing a device adapted to scrub, clean
carpets, wax floors, burnish floors, remove wax or varnish from
floors, vacuum, etc. Thus, it is contemplated, that this system may
be used for a plurality of cleaning or floor treatment
operations.
Remote Control
[0035] It is yet another aspect of the present invention to provide
a highly mobile floor treatment apparatus that can include a car
washer assembly. As will be appreciated by those skilled in the
art, if so configured, the device could include a car washer wand
connected to appropriate pumps and could be utilized to pre-clean
heavily soiled areas prior to final cleaning with use of the
device.
[0036] It is still another aspect of the present invention to
provide a floor treatment apparatus that does not require direct
contact with an operator to perform its tasks. More specifically,
one embodiment of the present invention is adapted to be remote
controlled. This embodiment of the present invention is equipped
with remote control mechanisms and software currently known in the
art, such as taught by U.S. Pat. No. 6,625,843 to Kim et al., which
is incorporated in its entirety herein. In addition, this
embodiment of the present invention may be equipped with the
plurality of cameras such that offsite monitoring and control may
be performed. In a related embodiment of the present invention,
software is installed in the cleaning apparatus such that human
contact or monitoring is not required. More specifically, one
embodiment of the present invention is adapted to learn its
environment as it operates in an area such that remote controlling
is not required. Alternatively, it is well within the scope of this
invention to preprogram the dimension of floored surfaces into the
smart treatment device, wherein the device is parameterized with
the surface dimensions before the task is initiated. Apparatus of
this type are known in the art, such as the RoombaJ device by
iRobot Corporation, aspects of which are described in U.S. Pat.
Nos. 6,594,844 and 6,535,793, which are both incorporated in their
entirety herein.
Safety
[0037] It is another aspect of the present invention to provide a
cleaning apparatus that is safe and comfortable to use. More
specifically, one embodiment of the present invention includes an
operator platform. This platform allows the operator to stand on
the device during the treatment operation, thus increasing
productivity and lowering the chances of injury or fatigue to the
operator. It another embodiment of the present invention, a seat is
provided wherein the operator may comfortably sit while completing
his or her task. Other safety and comfort features such as rails,
pads, and belts, may be provided depending on the needs of the
operator.
[0038] Thus, it is one aspect of the present invention to provide a
floor treatment apparatus which comprises:
[0039] a chassis with a lower surface, a front surface, an upper
surface, a rear surface, a left surface and a right surface,
wherein a platform is provided that is adapted to support the
weight of an operator;
[0040] a powered wheel operably connected adjacent the lower
surface of the chassis, the powered wheel being capable of at least
one of transitioning and rotating the floor treating apparatus;
[0041] a steering mechanism adjacent to the upper surface that is
accessible by the operator;
[0042] an operable floor treating device connected adjacent to the
lower surface of the chassis;
[0043] an operable debris collection device connected adjacent to
the lower surface of the chassis; and
[0044] wherein an operator controls the floor treatment apparatus
from the platform.
Platform & Ergonomics
[0045] In various embodiments of the present disclosure, a platform
is provided on a rear portion of a cleaning device to receive a
user. In preferred embodiments, the platform comprises an area that
is operable to receive the feet of user in a standing position and
wherein the user is acting as an operator of the device. In some
embodiments, the center of the platform is offset from a centerline
of the cleaning device.
[0046] Various embodiments of the present disclosure comprise at
least one floor treating device (e.g. a rotary brush) that is
biased or otherwise provided closer to a first side of the device
than a second side. The platform of the device is offset or biased
toward the first side of the device. It should be recognized,
however, that embodiments of the present disclosure that comprise
an offset platform are not limited to a corresponding or similarly
offset floor treating device. For example, it is contemplated that
devices are provided that comprises an offset platform but that do
not comprise an offset, biased, or asymmetrical floor treating
device.
[0047] In at least some embodiments, and as is shown and described
herein, a user platform of the device is provided proximal to the
side of the device that comprises the cleaning device. Applicant
has determined that the provision of an offset platform improves
the functioning of the device wherein users and users' line of
sight is directed toward a portion of the device that comprises
cleaning and floor or surface contact features. Such offset
platforms and related features prevent users from directing their
focus elsewhere, and thereby improve both cleaning functions and
safety.
[0048] In some embodiments, other cleaning device features in
addition to the platform are provided off-center. For example,
certain embodiments of the present disclosure provide that a
cleaning deck including a scrubbing pad and a squeegee is
positioned off-center on the machine. Additionally, a drive wheel
is provided off-center on the machine. As shown and described in
more detail herein, certain embodiments of the present disclosure
contemplate a pivotable trailing squeegee that is capable of
rotating as the cleaning device turns. Device and squeegee
performance has been optimized by the positioning of various
components including, but not limited to a steerable drive wheel
provided on a lower portion of the device.
[0049] In one embodiment, a floor treatment apparatus is provided
that is operable to receive inputs from direct contact with an
operator and without direct contact with an operator to perform
tasks. The apparatus comprises a chassis comprising a front, a
back, a lower surface, a front surface adjacent the front, an upper
surface, a rear surface located behind a center point of the
chassis, a left surface, and a right surface. The chassis comprises
a centerline extending through a lateral midpoint of the left
surface and the right surface. A platform is located partially
between a portion of the right surface and the left surface and at
least partially behind the rear surface, wherein the platform
includes a top surface adapted to receive the feet of an operator.
The platform comprises a midpoint that is offset relative to the
centerline of the chassis and wherein the platform is provided
closer to one side of the apparatus than the other.
Debris Management & Bearing Protection
[0050] In various embodiments of the present disclosure, cleaning
devices are provided with one or more cleaning brushes. For
example, in embodiments that comprise vacuum capabilities, at least
one cleaning brush is provided that is rotatable about a horizontal
axis (i.e. parallel to a floor or ground surface). Bearing members
are provided on opposing ends of the brush and/or drive member to
enable a rotation of the brush. Applicant has determined that a
cleaning motion of the brush (i.e. rotation of the brush coupled
with a vacuum force) causes debris including but not limited to
hair strands to migrate along the length of the brush to the
periphery of the brush where such debris can become entrained in or
otherwise enter the bearing(s). This has been found to degrade the
seals of the bearing(s) and may cause lubricant to escape from the
bearings while also allowing debris to enter the bearings. Various
embodiments of the present disclosure comprise at least one bearing
protector. In some embodiments, the bearing protector(s) comprise a
stationary brush provided proximal to the bearing. In certain
embodiments, the stationary brush comprises bristles that are
substantially perpendicular to the horizontal axis of the rotary
brush. The stationary brush acts as a barrier to keep hair and
fibers from breaching the bearings, and thereby preserves the life
of certain critical components of the device. In some embodiments,
at least one stationary brush is provided that is selectively
removable and wherein a user may remove the stationary brush for
cleaning and/or replacement. In various embodiments, cleaning
brushes are provided that comprise selectively removable brushes
that selectively attach and detach from drive members of the
device. It will be recognized, however, that stationary
bearing-protector brushes of the present disclosure are
contemplated as being employed on various different machines and
are not limited to any particular embodiment or type of cleaning
device. For example, it is contemplated that such stationary
brushes are provided on conventional floor vacuums that employ
rotatory cleaning brushes.
[0051] In one embodiment, a floor treatment and cleaning device is
provided. The device comprises a first roller and a second roller,
wherein the first roller and the second roller each comprise a
longitudinal axis. The first roller is spaced apart from the second
roller, and the longitudinal axis of the first roller extends
parallel to the longitudinal axis of the second roller. The first
roller and the second roller each comprise a plurality of bristles
extending therefrom. At least one of the first roller and the
second roller is rotatably connected to a bearing assembly. A
stationary brush is provided proximal to the bearing assembly,
wherein the stationary brush is operable to contact and deflect
debris provided on at least one of the first roller, the second
roller, the plurality of bristles, and the bearing assembly to
prevent ingress of the debris into the bearing assembly.
Cable Management
[0052] In various embodiments of the present disclosure, at least
one wire and cable management device is provided. In various
steered or steerable floor cleaning devices, cables and wired
connections to power and control a motor (for example) are
provided. Such cables and wires are often wrapped around a steering
column, or otherwise poorly secured to the device. Over time, these
cables and wires can become caught or entangled on various
components of the device as the device is steered, which may
further lead to breakage of the wires and inoperability of critical
elements such as a drive motor.
[0053] Embodiments of the present disclosure provide a containment
system for wires and cables. In some embodiments, a containment
system is provided that comprises a wire storage member provided
adjacent or proximal to a rotatable drive motor, and wherein the
wire storage member is fixed at least relative to the rotatable
motor. Cables and wires are operable to extend and retract as the
device is steered, thereby allowing cables and wires to be rigidly
fixed to anchor points, minimize slack, and protect such wiring and
cabling from damage and breakage.
[0054] In one embodiment, a floor treatment apparatus is provided
that is operable to receive inputs from direct contact with an
operator and without direct contact with an operator to perform
tasks. The apparatus comprises a chassis comprising a front, a
back, a lower surface, a front surface adjacent the front, an upper
surface, a rear surface located behind a center point of the
chassis, a left surface, and a right surface. A motor is rotatably
secured to a lower surface of the chassis. The motor is coupled to
a cable housing member that is operable to receive and house a
length of cable. The cable housing member is fixed to the lower
surface of the chassis and comprises an aperture for receiving at
least one of a wire and a cable extending between an interior
volume of the cable housing member and an electrical component of
the apparatus.
[0055] The Summary of the Invention is neither intended nor should
it be construed as being representative of the full extent and
scope of the present invention. Some aspects of the present
invention are set forth in various levels of detail in the Summary
of the Invention, as well as in the attached drawings and the
Detailed Description of the Invention. No limitation as to the
scope of the present invention is intended by either the inclusion
or non-inclusion of elements, components, etc. in this Summary of
the Invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0056] The accompanying drawings, which are incorporated in and
constitute a part of the specification, illustrate embodiments of
the invention and together with the general description of the
invention given above and the detailed description of the drawings
given below, serve to explain the principles of these
embodiments.
[0057] FIG. 1 is a perspective view of one embodiment of the
present invention showing an operator standing on the platform
thereon;
[0058] FIG. 2 is a perspective of an alternate embodiment of the
present invention that is configured for fluid extraction, and
which is controlled by at least one joy stick;
[0059] FIG. 3 is a perspective view and alternative embodiment of
the present invention that is configured for burnishing
operations;
[0060] FIG. 4 is a perspective view of an alternative embodiment of
the present invention that is equipped with moveable brushes that
are adapted to swing out to more efficiently treat a floor surface,
and which also includes a wand for selectively cleaning difficult
to reach areas;
[0061] FIG. 5 is a perspective view of an alternative embodiment of
the present invention that is designed to rotate about an 360E axis
without significantly traversing in other directions;
[0062] FIG. 6 is a perspective view of an alternative embodiment of
the present invention that is designed to reach tight areas of
floor surface;
[0063] FIG. 7 is a detailed perspective view of the embodiment
shown in FIG. 6, showing the steering wheel, brush, and squeegee
assembly used therewith;
[0064] FIG. 8 is a top plan view of a flooring surface;
[0065] FIGS. 9A-B are bottom plan views showing configurations of
steering, cleaning, and power mechanisms;
[0066] FIG. 10 is a bottom plan view of an alternate embodiment of
the present invention showing an alternate configuration of
steering, cleaning, and power mechanisms;
[0067] FIG. 11 is a perspective view of an alternative embodiment
of the present invention that is adapted to be remotely
controlled;
[0068] FIGS. 12A-H are views of a rotatable squeegee for use in one
embodiment of the present invention;
[0069] FIGS. 13A-D are views of a waste fluid system showing a
strain basket and a drainage port of one embodiment of the present
invention;
[0070] FIGS. 14A-D are views of the rear housing and battery tray
of one embodiment of the present invention;
[0071] FIG. 15 is a perspective view of a control panel and handles
of one embodiment of the present invention;
[0072] FIG. 16 is a perspective view of an operator platform with a
plurality of switches of one embodiment of the present
invention;
[0073] FIGS. 17A-B is are views of a seat of one embodiment of the
present invention;
[0074] FIGS. 18A-D are views of a tank and front housing of one
embodiment of the present invention;
[0075] FIGS. 19A-B are views of a vacuum fan interconnected to the
front housing of one embodiment of the present invention;
[0076] FIG. 20 is a right elevation view of one embodiment of the
present invention showing the waste water return hose;
[0077] FIG. 21 is a perspective view of a floor cleaning device
according to one embodiment of the present disclosure;
[0078] FIG. 22a is a rear elevation view of a floor cleaning device
according to one embodiment of the present disclosure;
[0079] FIG. 22b is a rear elevation view of a floor cleaning device
according to one embodiment of the present disclosure;
[0080] FIG. 22c is a bottom perspective view of a floor cleaning
device according to one embodiment of the present disclosure;
[0081] FIG. 23a is an illustration of certain components of a
cleaning device during a turning operation and according to one
embodiment of the present disclosure;
[0082] FIG. 23b is an illustration of certain components of a
cleaning device during a turning operation and according to one
embodiment of the present disclosure;
[0083] FIG. 24 is a perspective view of a rotatable cleaning device
according to one embodiment of the present disclosure;
[0084] FIG. 25 is a perspective view of a rotatable cleaning device
according to one embodiment of the present disclosure;
[0085] FIG. 26 is a bottom perspective view of components of a
cleaning device after a certain amount of usage and according to
one embodiment of the present disclosure;
[0086] FIG. 27 is a perspective view of a rotatable cleaning device
and bearing protector according to one embodiment of the present
disclosure;
[0087] FIG. 28 is a perspective view of a brush assembly according
to one embodiment of the present disclosure;
[0088] FIG. 29 is a perspective view of a brush assembly according
to one embodiment of the present disclosure;
[0089] FIG. 30 is a perspective view of a cable management system
according to one embodiment of the present disclosure; and
[0090] FIG. 31 is a perspective view of a cable management system
according to one embodiment of the present disclosure.
[0091] FIG. 32 is a cross-sectional elevation view of a cable
management system according to one embodiment of the present
disclosure.
[0092] FIG. 33 is a perspective view of a portion of a cable
management system according to one embodiment of the present
disclosure.
[0093] FIG. 34 is a perspective view of a portion of a cable
management system according to one embodiment of the present
disclosure.
[0094] FIG. 35 is a perspective view of a portion of a cable
management system according to one embodiment of the present
disclosure.
[0095] FIG. 36 is a perspective view of a portion of a cable
management system according to one embodiment of the present
disclosure.
[0096] To assist in the understanding of the present invention the
following list of components and associated numbering found in the
drawings is provided herein:
TABLE-US-00001 Component # Floor treating apparatus 2 Platform 4
Operator 6 Chassis 8 Bottom surface of chassis 10 Brush 12 Rotating
brush 13 Scrubber 14 Squeegee 16 Wheel 18 Steering wheel 20 Joy
stick 22 Handle Grip 24 Powered wheel 26 Burnishing pad 28 Swinging
brush 30 Wand 32 Hose 34 Swing arm 36 Bearing 38 Track 40 Pivot
point 42 Handle 44 Cam 46 Strainer basket 48 Waste tank cover 49
Waste fluid intake 50 Main Storage Tank 51 Clean fluid intake 52
Fitting 54 Flange 56 Waste fluid bag 58 Mandrill 60 Drain hose 62
Band Clamp 64 Rear housing 66 Battery 68 Tray 70 Drink holder 72
Housing pad 74 Control panel 76 Fastener 77 Operator presence
switch 80 Throttle 82 Seat 84 Adjustment Mechanism 85 Hook 86 Front
housing 88 Light 89 Vacuum fan 92 Vacuum exhaust channels 94 Waste
H2O return hose 96 Hose channel 98 Tip over stops 100 Primary
housing 104 Floor treatment apparatus 110 Cleaning deck 112
Trailing wheel 114 Trailing end 116 Lidar window 118 Platform 120
Centerline of platform 122 User-receiving area 124 Drive wheel 125
Lip 126 Drive wheel 130 Cleaning pad 132 Trailing squeegee 134
Center of cleaning pad 136 Centerline of apparatus 138 Vacuum brush
140 Bristles 142 Roller 143 Female drive member 144 Aperture 145
Stationary brush 146 Base 147 Bristles 149 Cleaning deck 150
Housing 151 Male drive member 152 Debris 154 Guard 155 Fastener 157
Sidewall 160 Female drive member 162 Aperture 164 First receiving
area 166 Second receiving area 168 Cable management device 170
Cable housing 172 Motor 174 First cable 176 Second cable 178
Aperture 180 Upper plate 182 Lower plate 184 Mounting member 186
Axis 189 Central aperture 190 Lip 192 Annular ring 194 Mounting
ring 196 Internal area 197 Key way 198 Cord aperture 199 Stop 200
Mounting ring 202 Annular ring 203 Central aperture 204 Internal
area 205 Lip 207 Cord aperture 209 Tooth 211 Stop 213
[0097] It should be understood that the drawings are not
necessarily to scale. In certain instances, details which are not
necessary for an understanding of the invention or which render
other details difficult to perceive may have been omitted. It
should be understood, of course, that the invention is not
necessarily limited to the particular embodiments illustrated
herein.
DETAILED DESCRIPTION
[0098] Referring now to FIGS. 1-20 an apparatus 2 for cleaning or
otherwise treating a floor surface is shown. More specifically, one
embodiment of the present invention includes a chassis 8 with a
platform 4 that is adapted to support the weight of an operator 6,
thus increasing the efficiency of the entire floor treatment
operation. In addition, various cleaning or floor treatment
components may be interconnected to the bottom surface 10 of the
chassis, such as brushes 12, scrubbers 14, squeegees 16, vacuum
shoes, etc.
[0099] The chassis 8 also includes a plurality of wheels 18
operably interconnected to the bottom surface 10 to enable steering
and provide stability. It is contemplated that the operator 6 will
stand on the platform 4 and steer the apparatus 2 with either a
steering wheel 20 or other type of steering mechanism, such as a
joy stick 22. Such an embodiment of the present invention enables
the floor surface to be cleaned or otherwise treated more
efficiently, since the operator 6 does not have to push or pull an
often heavy apparatus 2. In addition, since the human component of
powering or otherwise moving the apparatus 2 is omitted, more
consistent flooring treatment is achieved, thereby saving materials
and reducing costs of the entire operation.
[0100] Referring now to FIG. 1, one embodiment of the present
invention is shown. More specifically, the chassis 8 which includes
the platform 4 adapted to support the operator 6 during the floor
treatment operation is shown. The operator 6 preferably stands on
the platform 4 that is generally parallel to the flooring surface.
Preferably, the platform 4 is tilted, rear edge higher than the
front edge, between about 3 to 8 degrees to increase ergonomics.
However, as it will be appreciated by one skilled in the art, other
support devices, such as seats, which may be operably folded into
the chassis 8, may be provided to increase the comfort level of the
operator 6. In addition, the embodiment of the present invention
shown in FIG. 1 is equipped with a steering mechanism, such as a
wheel 18, that allows the operator 6 to easily maneuver the
apparatus 2 around the flooring surface.
[0101] The chassis 8 is constructed of any material, but preferably
hard plastic will be used to reduce the weight of the apparatus 2.
As shown herein, a plurality of wheels 18 are operably
interconnected to the rear of the apparatus 2 to provide stability
and perhaps power for locomotion. In addition, a squeegee 16 is
included that is adapted to extract or funnel water or debris to a
location where it is extracted via vacuum into a container
generally, but not always, located at least partially inside the
chassis 8. Further, this embodiment of the present invention
includes a brush 12 that is used to agitate the flooring surface to
loosen dirt, wherein spray nozzles may be employed situated behind
the brush 12 to treat the flooring and capture the dirt so that it
can be gathered by the squeegee 16 and suction system of the
apparatus 2.
[0102] Referring now to FIG. 2, an alternate embodiment of the
present invention that is used mainly for fluid extraction is
shown. This embodiment of the present invention is similar to the
apparatus described above, however alternate components are
interconnected to the bottom surface 10 of the chassis 8 such that
the apparatus is adapted to efficiently capture fluids or debris
deposited on a floored surface. More specifically, this embodiment
of the present invention is equipped with at least one brush 12
adapted to agitate water and/or debris and a squeegee 16 that is
positioned adjacent to the rear surface of the chassis 8 that
contains fluid and debris as the apparatus 2 moves forward. In one
embodiment of the present invention, a suction device, such as a
vacuum shoe, is positioned near the squeegee 16 such that dirty
water is vacuumed from the surface and transferred back into a tank
situated inside or adjacent to the chassis 8. Alternatively,
another embodiment of the present invention is provided with a
squeegee 16 with a plurality of suction holes that are the terminus
of conduits that transport waste water to the storage tank.
[0103] In the illustrated embodiment, the operator 6 is able to
control the apparatus 2 with a plurality of joy sticks 22. In
addition, hand grips 24 are provided on the sides of the operator 6
to increase safety. Further, this embodiment of the present
invention employs powered wheels 26 that allow the entire system to
rotate on a single vertical axis without substantially
transitioning in other directions. More specifically, this
embodiment of the present invention is capable of performing a 360E
turn, which aids cleaning of tight spaces.
[0104] An alternate embodiment of the present invention that is
used for burnishing is shown in FIG. 3. This embodiment of the
present invention includes a burnishing pad 28 operably
interconnected to the bottom surface of the chassis 10. As before,
the operator 6 stands on a platform 4 built into the chassis 8. One
skilled in the art will appreciate that this embodiment of the
present invention may also include a device for suctioning debris
left over from the burnishing process, such as dust or wax
particulates, for example.
[0105] Referring now to FIG. 4, an alternate embodiment of the
present invention that employs swinging brushes 30 is shown. This
embodiment of the present invention is very similar to those
described above, however the brushes 30 used to agitate, scrub, or
burnish are rotatably interconnected to the bottom surface 10 of
the chassis 8. More specifically, the brushes 30 of this embodiment
are capable of independently folding inwardly, thereby efficiently
cleaning the interior portion of a floor when the apparatus is
operating near a vertical surface such as a wall. As shown herein,
the brushes 30 are independently movable and preferably spring
loaded outward such that contact with a vertical surface causes the
brush 30 to fold under the chassis 8. Alternatively, as one in the
art will appreciate, the orientation of the brushes may be
controlled by the operator. In addition, a wand 32 interconnected
to a hose 34 may also be employed with this embodiment of the
present invention to allow for selective application of cleaning
solution or suction.
[0106] Referring now to FIG. 5, another embodiment of the present
invention that utilizes centered powered wheels 26 is shown. More
specifically, this embodiment of the invention is similar to those
described above, however it is equipped with a plurality of wheels
26 that allow a 360E turning capability. This embodiment of the
present invention is also similarly adapted for cleaning the
surface of a floor with a brush 12 or a plurality thereof that is
used to agitate the dirt wherein a squeegee contains and suctions
debris into a container.
[0107] Referring now to FIGS. 6-8, an alternate embodiment of the
present invention is shown that is equipped with a wheel 18 with
brushes 12 therearound for cleaning in all directions. This
embodiment of the present invention is equipped with brushes 12
that allow for cleaning or agitation of the flooring surface in any
direction the apparatus 2 is moving, thus efficiently cleaning
flooring without having to make multiple passes over the
surface.
[0108] Referring now to FIG. 9A-B, one configuration of cleaning
components interconnected to the bottom surface 10 of the chassis 8
is shown. More specifically, one embodiment of the present
invention is adapted to either sweep or clean a floor. In the
illustrated embodiment, a presweeping brush 12 agitates the carpet
or hardwood floor to loosen debris. Next, rotating scrubbing
brushes further agitate the surface and perhaps add fluid and
cleaning solution thereto to help loosen and contain any loose
debris. Finally, a squeegee 16 and preferably a suction system is
provided that captures the dirty water and as the apparatus is
moved forward. As shown herein, the drive unit is the center wheel
26, which is also adapted to selectively rotate upon steering
commands from the operator 6.
[0109] FIG. 9B shows a configuration of cleaning components
interconnected to the bottom surface 10 of the chassis 8 similar to
what was shown in FIG. 9A. The difference, however, is that the
pre-sweeping brush 12 has been replaced by three scrub brushes or
three rotating brushes, 13A, 13B and 13C that may be used to either
sweep, burnish or combinations thereof a floor surface. The brushes
can rotate at speeds desired by the operator or at preselected
speeds and in directions selected by the operator or in
pre-selected directions.
[0110] Referring now to FIG. 10, an alternate configuration of the
cleaning components interconnected to the bottom surface 10 of the
chassis 8 is shown. More specifically, this configuration is
substantially similar to that shown above in FIG. 9, however, the
drive mechanism of the apparatus is a transaxled power plant that
provides power to the rear wheels 26, wherein the steering is
performed by a front wheel. In one embodiment of the present
invention the drive mechanism is an electric monowheel drive. In
another embodiment, the drive mechanism comprises rear wheels that
are independently driven by drive motors.
[0111] Referring now to FIG. 11, yet another embodiment of the
present invention performs a floor treatment operation without the
need of physical human contact is shown. More specifically, this
embodiment of the present invention is remote controlled or
otherwise intelligent such that it cleans a floor surface without
the direct contact of an operator. This embodiment of the present
invention may be configured for any task, such as scrubbing,
sweeping, vacuuming, burnishing, carpet cleaning, waxing,
surfacing, cleaning, etc. It is envisioned that the operator be in
a separate location, perhaps offsite from the actual cleaning
operation, and aided by remote viewing devices. Alternatively, one
embodiment of the present invention is programmed with the ability
to automatically treat a floor surface, wherein the dimensions of
the surface are either programmed into or learned as the apparatus
is in use, thereby alleviating any need for human contact with the
apparatus. This embodiment of the present invention may be deployed
from a storage location automatically wherein quick disconnects to
fluid sources or waste receptacles are remotely joined to it such
that filling and emptying tanks or waste containers inside the
chassis 8 is done without the need of a human operator as well.
This embodiment of the present invention may be used in areas where
it is dangerous for humans to operate, such as nuclear power
plants, areas where asbestos exposure is likely, etc.
[0112] Referring now to FIG. 12A-G, a squeegee 16 for use in one
embodiments of the present invention is shown. More specifically,
some embodiments of the present invention include a pivot mechanism
that allows the squeegee 16 to remain in place when the floor
treating apparatus 2 is turning. Thus, the amount of fluid
extracted when the apparatus 2 is making a tight turn is increased.
In the illustrated embodiment, the squeegee 16 is connected to a
swing arm 36 that pivots about a point adjacent to the front wheel
18 of the apparatus. The swing arm 36 is supported via rollers or
bearings 38 on a track 40 that maintain the squeegee's 16 vertical
position relative to the floor. Upon making a right or left hand
turn, friction will tend to keep the squeegee 16 in a straight
line, following the original path of the vehicle. Once a new line
of travel is established, the squeegee 16 will fall back in place
substantially under the apparatus 2. FIG. 12A shows the squeegee 16
in its upmost left position, while FIG. 12C shows the squeegee in
its upmost right position. FIG. 12B shows the squeegee in a neutral
position while FIG. 12D shows the squeegee in a neutral position
but from a side view.
[0113] The squeegee 16 of one embodiment of the present invention
is provided with a plurality of wheels that interface with the
floor to maintain the vertical clearance of the squeegee assembly.
In addition, side rollers may be provided that prevent the squeegee
16 from contacting a vertical surface, such as a wall. These wheels
and various portions of the squeegee assembly may be selectively
adjustable such that the width of the squeegee 16 and the placement
of the wheels (squeegee height) may be altered at will.
[0114] As shown herein, the swing arm 36 connects to a pivot 42
that utilizes the momentum of the squeegee 16 to swing it from the
apparatus 2. However, one skilled in the art will appreciate other
methods of transitioning the squeegee 16 from the floor treatment
apparatus 2 may be utilized without departing from the scope of the
invention. More specifically, a motorized system may be employed
that is in communication with the steering system of the vehicle
such that rotation of the steering wheel will swing the squeegee 16
away from the apparatus 2 in a predetermined manner.
[0115] An actuation system that selectively raises the squeegee 16
from the floor may also be included as shown in FIG. 12E. In
accordance with some embodiments of the present invention, a handle
actuated leverage system 44 is used and is in mechanical
communication with a cam 46. The cam allows the user to apply
minimal force to the handle 44 adjacent to the control panel to
raise and lower the squeegee 16. One skilled in the art will also
appreciate that this function may be performed alternatively with a
motor.
[0116] FIG. 12H is a blow-up of a section of FIG. 12D showing
positioning of the track 40 in relation to bearing 38.
[0117] Referring now to FIG. 13A-D, a recovery tank strainer basket
48 of one embodiment of the present invention is shown. Recovery
tanks of some embodiments of the present invention are constructed
out of resiliently deflectable material, such as a plastic bag. The
bag is inserted into the clean fluid tank 51 of the apparatus. Once
the clean fluid is transferred to the floor treatment tool of the
apparatus, waste water may be suctioned into the waste fluid tank,
thus expanding the bag and occupying the space once occupied by now
dispensed clean fluid. Often, small metal shavings, wood splinters,
glass, etc., may be suctioned with the waste fluid and deposited
into the waste fluid tank, which may produce rips or tears in the
bag and ultimately lead to leakage and contamination of the
cleaning fluid. Thus, it is desirable to have a system that
captures any dangerous debris such that it does not come in contact
with the waste fluid tank. One embodiment of the present invention
thus includes a strain basket 48 connected to the cover 49 of the
waste fluid tank. In the illustrated embodiment, a generally
rectangular straining device constructed of a rigid material with a
plurality of apertures therethrough is provided. As the waste water
is deposited into the tank through the cover, any large debris is
captured by the strain basket 48. One skilled in the art will
appreciate that any sized aperture may be employed to dictate the
size of debris that is captured. Also, it should be specifically
understood that any shape of strain basket 48 may be used without
departing from the scope of the invention.
[0118] Referring now specifically to FIG. 13D, a fluid discharge
system that is connected to the waste water tank 58 of one
embodiment of the present invention is shown. More specifically, a
fitting 54 with a flange 56 may be used that is connected to the
main storage tank 51 of the apparatus. Preferably, the fitting 54
is spun at a high rate of speed and engaged with an aperture in the
tank 51, thus creating friction induced heat between the two
surfaces and welding them together. The opening of the waste water
bag 58 is then fed through the fitting 54 and a mandrill 60 is
added to sandwich the waste water bag 58 therebetween. The mandrill
60 is made out of a rigid material, such as aluminum to ensure an
open flow path. A drain hose 62 is slid over the outer surface of
the fitting 54 and is secured with a clamp 64. One skilled in the
art will appreciate that the drain hose 64 is generally capped
during use, wherein the user disconnects the cap to drain the waste
water from the bag 58. To ensure that the bag 58 is entirely empty,
a new solution may be added to the tank, thus squeezing the bag 58
to expel all the waste water contained therein.
[0119] Referring now to FIG. 14A-D, the rear portion of the floor
treatment apparatus 2 is shown. More specifically, the rear of the
apparatus 2 includes a removable housing 66. The housing 66 of the
present invention is capable of selective rotation away from a
primary housing 104 about an axis parallel to the rear axle of the
apparatus 2. Alternatively, the rear housing 66 may be completely
removable. This aspect of the present invention provides the
ability to access batteries 68 that may provide power to the
apparatus 2. The batteries 68 may reside on a removable tray 70
that is slidingly engaged to the apparatus 2, thus providing easy
access for maintenance. The tray 70 resides on tracks that
interface with a plurality of wheels, bearings, etc. The tray also
includes a locking feature that securedly maintains the batteries
68 inside the vehicle. The rear housing 66 also includes other
features, such as a cavity for securing various items and drink
holders 72. A pad 74 may also be included that provides greater
protection and comfort to the user.
[0120] Referring now to FIG. 15, a control panel 76 and associated
structure of one embodiment of the present invention is shown.
Embodiments of the present invention include a control panel 76
that includes minimal fasteners 77 for interconnection to the floor
treatment apparatus 2. That is, thumb screws, or similar type of
fasteners may be included such that quick and easy removal of the
control panel 76 may be achieved to facilitate repair.
[0121] Embodiments of the present invention also include hand grips
24 adjacent to the control panel 76 to provide support for the
operator. More specifically, during tight turns the inertial forces
acting upon an individual may cause an operator to fall. Hand grips
24, which may be integrated onto the chassis of the apparatus, will
give the operator a place to hold onto the device for added comfort
and provide an additional safety feature. In addition they provide
support when operating control switches located adjacent to handle
grip 78.
[0122] Referring now to FIG. 16, the platform 4 of one embodiment
of the present invention is shown. More specifically, one
embodiment of the present invention includes a platform 4 with an
operator presence switch 80, a platform switch and a throttle 82.
The platform 4 also may include a suspension system and be
cushioned to increase operator comfort. In addition, the platform 4
may be foldable such that the envelop of the apparatus may be
selectively reduced. In some embodiments of the present invention
the platform 4 is located above an axis defined by the centers of
the wheels located near the rear of the floor cleaning machine, as
specifically shown at least in FIGS. 12A-12D, and 19A. In some
embodiments of the present invention, the platform 4 is located
below an axis defined by the centers of the wheels located near the
rear of the floor cleaning machine, as specifically shown at least
in FIG. 14B. In some other embodiments of the present invention,
the outer surface of the wheels located near the rear of the floor
cleaning machine define a cylindrical volume, and the platform 4 is
located such that a portion thereof penetrates the volume defined
by the wheels, as specifically shown at least in FIGS. 12A-12D,
14A, 14B, 16 and 20. In some embodiments of the present invention,
the platform 4 is located below an uppermost point of the wheels
located near the rear of the floor cleaning machine. As shown in
FIG. 16, one embodiment of the present invention includes a
platform with a left sidewall and a right sidewall that extend
above the surface that receives the operator's feet. Embodiments of
the present invention may also include a front wall extending from
a front, inner surface that receives the operator's feet. Further,
as shown in FIG. 9B, the platform may be associated with rear
wheels that are not interconnected.
[0123] The operator presence switch 80 of one embodiment of the
present invention is designed to act as a safety feature that
interrupts the throttle pedal when not depressed. This ensures that
the operator has both feet positioned on the platform when the
machine is in use. Upon deactivation of the switch, for example if
the operator removes a foot from the switch, a neutral mode may be
engaged such that no power or forward or rearward motion of the
device is possible. In addition, the operator presence switch 80
may ensure that sufficient weight is maintained on the platform at
all times as a safety feature.
[0124] In the typical use, the platform switch is in operable
connection with the platform, such that it is activated when the
operator stands on the platform. The operator must then engage a
reset device, preferably on the control panel, to initiate motion.
The purpose of the platform switch and reset switch is to act as a
safety feature such that the machine does not immediately move when
the operator steps on to the peddle platform. Upon deactivation of
the switch, for example if the operator steps from the apparatus, a
neutral mode may be engaged such that no power and forward or
rearward motion is possible.
[0125] The throttle 82 of some embodiments of the present invention
is adapted to selectively increase or decrease the speed of the
apparatus depending on the desires of the operator. More
specifically, various speed ranges may be included: neutral, first,
second, third, reverse, etc. (or slow, medium, fast, etc.). In some
embodiments, cleaning operations are performed at slow speeds,
while transportation from location to location is performed at
higher speeds. When the operator sets the speed range to first, for
example, the activation of the throttle 82 will propel the
apparatus within that speed range, such that it cannot transition
from the first range to the second range without a manual shift of
the range. Thus, embodiments of the present invention include a
hand speed range selector, wherein the throttle 82 simply turns the
desired speed range to an activated mode. The neutral mode may also
be set by the operator, wherein no amount of throttle 82 engagement
will increase the speed of the apparatus. In addition, as mentioned
briefly above, when the operator removes his or her foot from the
operator presence switch 80, the apparatus automatically disengages
the throttle. One skilled in the art will appreciate however, that
a throttle 82 may be provided that provides selective speed
increments, such as employed on an automobile, without departing
from the scope of the invention.
[0126] It is likewise known that a throttle used on an electric
motor drive device could operate by switches which regulate power
delivered from batteries to a motor. For instance, and referring
now to FIG. 10 from incorporated by reference U.S. Pat. No.
4,196,492: "batteries 240 are connected through a manually operable
switch 117 to a solenoid operated switch 134. Switch 134 has two
sets of normally open contacts 132 and two sets of normally closed
contacts 133. All the contacts 132 and 133 are mechanically coupled
together by means of a rod 135 for simultaneous ganged operation
when coil 136 is energized. In the operation of cleaning machine
202, when the manually operable switch 117 is closed by the
operator, coil 136 is energized causing the contacts 132 to close.
This feeds power through to a potentiometer 131. Potentiometer 131
may be used to vary the voltage there through to adjust the speed
of drive motor 108. From the potentiometer 131, the power passes
through a forward and reverse switch 120. Forward and reverse
switch 120 is identical to that disclosed in FIG. 7 and has for its
purpose the changing of the polarity of the voltage applied to
drive motor 108 to drive that motor in forward or reverse
directions. However, indicator lights generally indicated as 260
and 262 are wired into the forward and reverse switch 120. When the
motor 108 is being driven in a forward direction, the green
indicator light 260 will light. Conversely, when the motor 108 is
being driven in a reverse direction, the red indicator light 262
will be lit."
[0127] Embodiments of the present invention also include a braking
mechanism. For example, when an operator removes his or her foot
from the operator presence switch 80, throttle, or disengages the
platform switch, a braking mechanism may be employed such that any
motion of the apparatus automatically or gradually ceases. The
braking mechanism may be electro mechanical, mechanical or
hydraulic. Alternatively, the foot brake may be provided adjacent
to the throttle 82 or operator presence switch 80 that provides the
same halting capability. Further, hand or emergency brakes may be
employed adjacent to the control panel of the apparatus.
[0128] Referring now to FIG. 17A-B, a seat 84 of one embodiment of
the present invention is shown. More specifically, embodiments of
the present invention include a selectively connectable seating
device 84 for engagement with the chassis to increase the operator
comfort. Seats 84 of some embodiments of the present invention are
selectively adjustable 85, thus making them easy to accommodate any
sized individual. In operation, a receiver hitch, or similar
connection mechanism, is connected to the rear portion of the
platform 4 and a mating device for interconnection to the receiver
hitch, or other device, is provided on the seat 84. The seat 84 may
also include a plurality of hooks, shelves, cup holders, etc. for
the securement of cords, bags, or any other type of cleaning or
comfort related item. Further, the receiver hitch may be used when
the seat 84 is engaged or not engaged, for example, to transport
other items such as a supplemental wheeled device that may
accommodate extra power sources, cleaning supplies, tanks, etc.
[0129] Referring now to FIG. 18A-D, a tank 50 of one embodiment of
the present invention is shown. Some embodiments of the present
invention include a tank 50 that is equipped with a plurality of
lights 89 and/or horns that facilitate cleaning and/or act as
additional safety features. Alternatively, lights may be integrated
into bumpers positioned adjacent to the tank 50 or on the sides of
the apparatus.
[0130] Although not shown, a filter may be provided in fluid
communication with the fluid pump. This filter is designed to
capture any debris that may adversely affect the operation of the
pump. Unfortunately, on many cleaning machines, the filter is
placed in a hard to access location, such that repair or monitoring
thereof is very difficult. Thus, one embodiment of the present
invention includes a filter that is situated on the outer surface
of the housing, perhaps on the control panel. Thus, the operator
has ample opportunity to monitor the integrity of the filter and
make quick repairs when necessary.
[0131] Referring now to FIG. 19A-B, a vacuum fan 92 which is
connected to the front housing 88 of one embodiment of the present
invention is shown. More specifically, a vacuum fan 92 provides
suction to remove debris filled fluids from the floor. The fan 92
is preferably situated under the control panel 76 of the vehicle,
such that the intake cooling air that is drawn in by the vacuum fan
92 is channeled adjacent to the control panel 76 to cool
componentry associated therewith.
[0132] In addition, the tank 50 may be made out of a formable
material such that exhaust channels 94 may be machined or molded
into the tank 50. The channels 94 direct the exhaust air from the
vacuum 92 to an exit muffler of the apparatus. The channels 94 also
act as a baffle to remove noise energy from the exhaust gases, thus
making the entire system quieter.
[0133] Referring now to FIG. 20, a waste fluid return hose 96 is
shown. More specifically, one embodiment of the present invention
decreases its profile by inserting the waste water hose 96 into a
hose channel 98 that is integrated into the outside surface of the
apparatus 2. The hose 96 being situated on the outside also has the
added advantage of making it very accessible, such that it can be
removed and inspected for clogs or breaches.
[0134] Further, some embodiments of the present invention are
provided with tip over stops adjacent to the front corners of the
apparatus. The stops may be replaceable and ensure that the
apparatus does not tip over during tight turns. The tip over stops
are generally constructed out of a material that is harmless to
flooring, such as Teflon, silicone, rubber, plastic, etc. In
addition, one skilled in the art will appreciate that rollers may
be employed that are situated a predetermined distance from the
floor to perform the same function.
[0135] Referring now to FIGS. 1-20, a manner of making the present
invention is shown and described herein. As has been explained, the
present invention is generally similar to the floor treatment
devices used in the art. However, unlike many prior art devices,
the present invention provides a location for which the operator
can stand or sit, thus enabling him or her to more efficiently
perform their tasks. In addition, instead of using brute strength
to perform the task of steering the cleaning device, a steering
mechanism and associated hardware are provided to aid in the smooth
transition from one direction to another. Also, the present
invention device has a compact profile and mechanism which allows
for 360E cleaning of tight spaces. Further, to construct the remote
control version of the system, software that is known in the art
may be installed in the chassis 8 to allow for the system to be
either remotely controlled or learn the cleaning surface as it
operates. In addition, a series of cameras may be interconnected to
the chassis 8 to provide remote viewing to an operator offsite.
[0136] FIG. 21 is a perspective view of a floor cleaning device 110
according to another embodiment of the present disclosure. As
shown, the device 110 comprises a ride-on or stand-on device that
is operable to clean floors and ground surfaces. The device 110
comprises a cleaning deck 112. In various embodiments, the device
110 and cleaning deck 112 comprise vacuum features, while other
embodiments comprise a cleaning deck 112 with scrubbing features
that do not necessarily comprise vacuum capabilities. Accordingly,
no limitation with respect to type of cleaning and floor treatments
are provided. A pair of trailing wheels 114 are provided proximal
to a rear or user-end 116 of the device. The user-end 116 comprises
an area for receiving a user or operator. The device 110 is
operable to be driven, steered, operated, etc. by a user, and is
further operable to perform cleaning functions in an autonomous or
semi-autonomous mode wherein no user is provided in contact with
the device. A forward end of the device 110 comprises a window 118
extending along at least a front portion of the chassis, and which
preferably extends or wraps around the sides of the device. The
window 118 comprises a cut-out or void in the chassis body that
enables a Lidar component provided within the device 110 to detect
objects and surfaces external to the device.
[0137] FIG. 22a is a rear elevation view of a cleaning device 110
showing the user-end of the device and a platform 120 for receiving
a user. As shown, the platform 120 and a steering wheel 121 are
provided off-center on the device 110. Specifically, a centerline
122 of the platform is positioned closer to a starboard side of the
device (right side in FIG. 22a). A cleaning brush 123 is provided
on one side of the device such that a cleaning path or cleaning
area is off-center relative to the device. The depicted embodiment
provides that a user platform 120 is shifted off-center such that a
user's gaze is directed over or at least proximal to a portion of
the device that comprises the cleaning brush 123. A lip 126 is
provided on at least one side of the user area 124 to contain a
user and generally provide safety and comfort.
[0138] FIG. 22b is a rear perspective of a cleaning device 110
according to an embodiment of the present disclosure and wherein
the platform 120 is shifted as shown and described in FIG. 22a. In
addition to providing ergonomic advantages and directing a user's
vision and sight lines to the appropriate region of the device, the
positioning of the platform 22b provides for a more efficient use
of space on the device 110. Specifically, and as shown in FIG. 22b,
a storage compartment 128 is provided adjacent to the off-center
platform 120. The storage compartment 128 is operable to receive
various components including, for example, vacuum wands, cleaning
tools, and/or internal components such as electrical connections,
pump, fluid conduits, etc. Additionally, the provision of the
off-center platform and the storage compartment 128 provides for an
overall smaller cleaning machine without reducing the effective
cleaning area. Greater compaction and packing efficiency is created
by the arrangement shown in FIG. 22b (for example) such that the
device comprises a smaller envelope or volume than existing devices
and is therefore easier to maneuver, store, etc.
[0139] FIG. 22c is a bottom perspective view of a floor cleaning
device according to one embodiment of the present disclosure. As
shown, the device comprises a cleaning deck 112, support wheels
114, a platform 120, a cleaning brush 123, a user area 124, and a
drive wheel 125. The drive wheel 125 comprises a powered and
steerable monowheel that is operable to be provided in contact with
a floor surface and provide locomotive functions to the device. In
the embodiment shown in FIG. 22c, the drive wheel 125 is centered
in a lateral direction of the device. In alternative embodiments,
it is contemplated that the drive wheel 125 is provided off-center
as is described herein.
[0140] FIG. 23a illustrates the layout of certain components of a
known cleaning device, and their impact on the device's operation.
As shown, a drive wheel 130 of the device is provided at an angle
that causes a right turn of the device. The angle in FIG. 23a is
approximately 60 degrees. A pair of trailing wheels 114 are
provided proximal to a rearward portion of the device, and wherein
the trailing wheels 114 are non-steerable wheels. The primary
function of the trailing wheels 114 is to support the weight of the
device and an associated user. A cleaning pad 132 is provided. The
cleaning pad is provided on a lower portion of a cleaning apparatus
proximal to a floor or ground surface to be cleaned. For
illustrative purposes, the cleaning pad 132 is shown as a circular
pad, but may comprise various different cleaning devices. A
trailing and pivotable squeegee 134 is provided. The squeegee 134
is contemplated as comprising a rubber squeegee blade, and in some
embodiments comprises additional features such as vacuum features,
pick-up orifices, cleaning pads, etc. The squeegee is rotatable
about a vertical axis extending through the mid-point 136 of the
cleaning pad 132.
[0141] As shown in FIG. 23a, the squeegee 134 rotates outwardly
while the device is turning. In FIG. 23a, a right turn of the
device effects a left-ward movement of the squeegee 134 such that
the squeegee is appropriately positioned to handle liquids and
other materials left behind during a cleaning operation. The
squeegee 134 comprises a mass that "swings" or pivots relative to a
reminder of the device during turning. FIG. 23b illustrates a left
turn of the device, and a corresponding right-ward movement of the
squeegee 134. In FIGS. 23a and 23b, the drive wheel is rotated by
about 60 degrees about a vertical axis. The center 136 of the
cleaning pad 132 and squeegee 134 is offset from a centerline of
the device 138. In the depicted embodiment, the center 136 of the
cleaning pad 132 is offset from the center of the device by about 2
inches. This offset is provided to focus cleaning functions of the
device toward one lateral side of the device and allow a user to
reliably and accurately clean along a wall or other physical limit,
for example.
[0142] Based in part on the lateral offset of the cleaning pad 132
toward the right of the machine (at least with respect to FIGS.
23a-23b), the squeegee is caused to deflect or rotate by different
amounts during left and right turns. Specifically, and as shown in
FIGS. 23a-23b, a 60 degree rotation of the drive wheel 130 during a
right turn requires an angular deflection .alpha. of the squeegee
of approximately 44.2 degrees to provide the center of the squeegee
in line with the travel path of the pad 132. An opposite rotation
of the wheel by the same amount to cause a left turn requires an
angular deflection .beta. of the squeegee 134 of approximately 37.8
degrees to maintain alignment. Accordingly, the squeegee response
time and overall effectiveness is reduced during right turns as
compared with left turns. To account for this, embodiments of the
present disclosure provide that a drive wheel 130 is provided that
is offset from the centerline of the device. Specifically, in some
embodiments, the drive wheel 130 is provided in-line with a center
of the cleaning pad 132 (or similar device) and wherein the
cleaning pad 132 and the drive wheel are both offset from the
centerline of the device by substantially the same amount. In such
embodiments, a squeegee associated with the cleaning deck or
cleaning pad 132 rotates an equal amount during turning
operations.
[0143] FIGS. 24-25 depict a brush assembly 140 according to one
embodiment of the present disclosure. As show, the brush assembly
140 comprises first and second rollers 142a, 142b with bristles
provided thereon. The rollers 142a, 142b are operable to agitate
and dislodge debris and dirt from a floor surface (e.g. a carpet).
The bristles are provided around a cylinder in a helical
arrangement. Although various embodiments provided herein show and
describe bristles that are provided in a helical arrangement, the
present disclosure is not limited to such embodiments. It is
contemplated, for example, that various linear bristle arrangements
are provided. Stationary brushes and bearing protection mechanism
of the present disclosure are not limited to use with any
particular type of brush or bristle arrangement. The brush assembly
140 comprises a removable cartridge that is operable to and
intended to be provided proximal to a vacuum port or pick-up
orifice. Each of the rollers 142a, 142b comprise female receiving
portions 144 (FIG. 25) for receiving rotary couplings provided on a
cleaning machine and wherein the brush assembly 140 is selectively
removable from the cleaning machine for cleaning, repair,
replacement, etc. As shown in FIG. 25, the brush assembly 140
comprises bearing protector features in the form of brushes
146.
[0144] FIG. 26 illustrates a brush assembly 140 and associated
cleaning deck 150 after a certain amount of use in cleaning
operations. As shown, the brush assembly 140 is connected to drive
members 152 of the cleaning deck 150, wherein the drive members 152
provide a rotational support that is capable of rotating the brush
during use. As shown in FIG. 26, debris 154 in the form of fibers
and strands (e.g. hair strands) that are not drawn into a vacuum
chamber are collected on the vacuum brush rollers. This debris 154
tends to migrate toward outer edges of the vacuum rollers and
further enter bearing elements provided with the drive members 152.
The infiltration of debris 154 into bearing elements can
significantly degrade the functionality and lifespan of the
bearings, and result in costly repair or replacement. Embodiments
of the present disclosure comprise at least one stationary brush
146 provided proximal to a bearing element. The brush 146 is
operable to contact and deflect debris 154 inwardly (i.e. inboard)
and prevent or minimize debris 154 from migrating toward or into
the bearings of the device. In some embodiments, the brush 146
comprises a selectively removeable brush that can be detached and
replaced or cleaned.
[0145] FIG. 27 is a perspective view of a brush assembly 140
according to one embodiment of the present disclosure. As shown,
the brush assembly 140 comprises a helical bristle arrangement
provided on a roller 143. A sidewall portion 160 is provided, and
the roller 143 is rotatable relative to the sidewall. The roller
comprises a female drive member 162 that selectively interconnects
to a powered portion of a cleaning device to rotate the roller and
bristles 142. As shown in FIG. 27, a stationary brush 146 is
provided and is connected to the sidewall 160 of the assembly. The
stationary brush 146 comprises bristles that are operable to
deflect or otherwise prevent migration of debris from the bristles
142 and roller(s) 143 toward the drive member(s) and bearing(s) of
the cleaning device (not shown in FIG. 27). In various embodiments,
the bristles of the stationary brush 146 are provided in contact
with at least one of the roller 143 and the female drive member
162. In alternative embodiments, the bristles of the stationary
brush 146 are spaced apart from moving parts of the device by a
small amount (e.g. between approximately 0.010 inches and 0.5
inches).
[0146] FIG. 27 shows a brush assembly 140 that is operable to
receive first and second rollers 143. A single roller 143 is
provided in FIG. 27 for illustrative purposes. However, the device
140 comprises a second receiving area with an aperture 164 provided
in the sidewall 160. As shown, the aperture 164 comprises a first
receiving portion 166 for receiving a terminal end of a roller 143
and in which the roller is rotatable. The aperture 164 further
comprises a second receiving portion 168 for receiving a stationary
brush 146. The second receiving portion 168 comprises a
substantially rectilinear void for receiving a brush 146. It will
be recognized, however, that the second receiving portion 168 can
comprise different shapes to accommodate brushes of different
shapes and no limitation with respect to the size and shape of the
aperture 164, first receiving potion 166, or second receiving
portion 168 are provided herein.
[0147] FIG. 28 is a perspective view of a brush assembly 140
according to one embodiment of the present disclosure. As shown,
the brush assembly 140 comprises a cartridge member that is
operable to receive roller brushes (not shown in FIG. 28) for use
in cleaning operations. The assembly 140 is operable to connect to
and be provided in communication with a cleaning deck of a cleaning
machine including, but not limited to, a ride-on floor cleaning
machine with a vacuum. The brush assembly 140 comprises a first end
with apertures 145 for receiving first ends of roller brushes, and
a second end comprising a housing 151 operable to receive second
ends of roller brushes. The housing 151 is contemplated as
comprising a drive member such as a gearing, belt(s) and/or a motor
for driving and rotating roller brushes attached to the assembly
140. Frame members 153a, 153b are provided that extend between the
first end and the second end.
[0148] As shown in FIG. 28, the assembly 140 comprises stationary
brushes 146a, 146b operable to serve as protective cleaning
devices. The stationary brushes 146a, 146b comprises selectively
removable brushes with bristles that extend substantially
perpendicular to the longitudinal axis of the first and/or second
roller brushes. The stationary brushes 146a, 146b provide a barrier
and passive cleaning mechanism to deflect and block dirt and debris
that is dislodged by a normal cleaning action of the roller brushes
and prevent such dirt and debris from entering bearings and
rotatable assemblies (not shown in FIG. 28).
[0149] As further shown in FIG. 28, the assembly 140 comprises a
plurality of guards 155. The guards 155 preferably comprise thin
gauge guard members extending from a frame member 153b. The guard
members 155 extend substantially perpendicular to the longitudinal
axis of the roller brushes and comprise a curved or angled distal
end to prevent the distal ends of the guard(s) from entering or
becoming caught in a carpet. In the depicted embodiment, the distal
ends of the guards 155 comprise angled ends with an angle or bend
of about 45 degrees. In some embodiments, the guards comprise
aluminum guards. The guards 155 are operable to serve as protective
members and prevent or reduce the risk of carpets (particularly
unsecured area rugs) from being drawn into the device by the roller
brushes. The guards 155 are also operable to prevent larger pieces
of debris from being drawn upwardly into the vacuum portions of the
device.
[0150] While FIG. 28 depicts one embodiment of the present
disclosure wherein an assembly 140 is provided and is operable to
receive first and second roller brushes, it will be recognized that
the present disclosure is not limited to devices having two roller
brushes. Indeed, it is contemplated that devices and features of
the present disclosure are provided with devices that comprise as
few as one brush or with devices that comprise more than two
brushes. Various features including but not limited to the
stationary brushes 146 and the guards 155 are not limited to or
required to be provided with a device having two roller
brushes.
[0151] FIG. 29 is a detailed perspective view of the assembly 140
of FIG. 28. As shown, the stationary brushes 146a, 146b each
comprise a base member 147a, 147b which preferably comprises a
rigid plastic base member from which bristles 149 extend and from
which the bristles are secured. Guard members 155 are shown for
reference. As provided in FIG. 29, the stationary brushes 146a,
146b are provided adjacent to the apertures 145 in the assembly
140. The apertures are operable to receive distal ends of roller
brushes which preferably connect to a rotatable bearing assembly.
The stationary brushes 146a, 146b are provided as passive cleaning
elements to deflect debris and protect bearing surfaces of a device
by preventing or reducing the risk of debris from entering the
bearing assembly. Additionally, the stationary brushes 146a, 146b
comprise replaceable members that are selectively secured to the
assembly 140. It is contemplated that the stationary brushes 146a,
146b are secured to the assembly by at least one fastener 157 that
extends into the base 147 of the brush and through a portion of the
assembly 140. Alternatively, the brushes may be secured by other
means including, for example, a snap-fit, magnets, or elastic
clips.
[0152] FIGS. 30-31 are perspective views of a cable management
device 170 according to one embodiment of the present disclosure.
As shown, the device 170 comprises a disc-shaped cable housing
member 172, which is securable to a cleaning device. In preferred
embodiments, the cable housing member 172 is bolted or otherwise
secured to a lower portion of a cleaning machine. An electric motor
174 is provided that is rotatable relative to the cable housing
member 172. The electric motor 174 is preferably rotatable about an
axis when the device 170 is installed and secured to a machine. As
shown in FIGS. 30-31, a first cable 176 is operable to extend from
the cable housing member 172 and provide power to the motor 174. A
second cable 178 is provided that extends to one or more features
or components provided on a device or machine upon which the device
170 is installed. As shown in FIG. 30, at least one of the upper
and lower portions of the housing member 172 comprises an aperture
180 for receiving a wire or cable.
[0153] The motor 174 is rotatable relative to the housing member
172. As the motor 174 rotates, the first cable 176 is allowed to
extend and retract from and to the housing member 172. The first
cable 176 comprises some rigidity due its construction (e.g. copper
wire and related housing) that resists a compressive force and
allows the cable 176 to wrap or otherwise be stowed in a coil
arrangement within the housing member 172. Accordingly, the motor
174 is allowed to pivot freely and as needed during turning and
standard operation of an associated device, and associated wiring
is stored and protected from various moving elements of the
device.
[0154] The device 170 is operable to secure cables, protect the
cables, and prevent loose cables from entering a field of view of
Lidar sensors in embodiments that comprise such features. Although
FIGS. 30-31 show and describe a device that receives electrical
cables, it will be expressly recognized that the device 170 and
features thereof are not limited to use with electrical cables or
wiring. For example, the device 170 is contemplated as receiving
and being operable to contain fluid hoses, vacuum hoses, exhaust
hoses, and various other flexible elongate members.
[0155] FIG. 32 is a cross-sectional elevation view of the device
170. As shown, the device 170 comprises a housing 172, and the
housing 172 comprises an upper plate 182 and a lower plate 184. An
interior volume is provided within and between the plates 182, 184.
The interior volume is operable to receive a length of wiring or
cable. The upper plate 182 is secured to a mounting member 186. The
upper plate 182 and mounting member 186 are fixed to a frame or
chassis of a corresponding device (e.g. a floor cleaner). The lower
plate 184 is fixed to and rotatable with the motor 174 about an
axis 189.
[0156] As noted, the distal ends of wiring that extends through the
device 172 are secured. The length of the wiring is therefore
wrapped and unwrapped within the plate members 182, 184 as the
motor 174 rotates about the axis 189. At least a portion of the
length of the wiring is therefore housed and secured such that
wiring does not become entangled on other components, does not
interfere with various sensors, and is at least partially protected
from water and cleaning solutions.
[0157] In preferred embodiments, the anchor points or inputs and
outputs of the cables 176, 178 are fixed (e.g. secured by one or
more cord grips or clamps). The upper and lower plates 182, 184 of
the device 170 provide an internal volume for housing cables. In
various embodiments, this internal volume comprises a substantially
cylindrical or toroidal volume. While it is contemplated that the
dimensions of this volume will vary based on the gauge of cable or
hose that is intended to be received by the device, various
embodiments of the present disclosure contemplate that a relatively
tight tolerance is provided between the plates 182, 184 and the
cable. In other words, the distance between the plates 182, 184 is
only slightly larger than a thickness of a cable to be retained in
the volume. In some embodiments, a gap of between approximately
0.40 inches and 0.750 inches, and more preferably of about 0.562
inches is provided for housing at least one cable or wire that is
0.50 inches in diameter. The spacing of the plates 182, 184 and
containment of the wires aids in the functioning of the device 170
by constraining wiring and prevent the wires from moving, folding,
rolling, and otherwise becoming entangled.
[0158] FIG. 33 is a bottom perspective view of an upper plate 182
of a cable management device 172 according to one embodiment. FIG.
34 is a top perspective view of the device 172 according to the
embodiment of FIG. 33. As shown, the device comprises an annular
member with a central aperture 190 for receiving a motor (for
example) and related mounting hardware. The device 172 comprises a
lip 192 around its perimeter to form an at least partially enclosed
volume when the device is assembled (see FIG. 32, for example). The
internal area 197 of the device (at least when assembled) is
operable to house and protect a cord, cable or conduit. A central
axis extends through the central aperture 190. The upper plate 182
comprises a circular mounting member 196 and a circular flange 194.
The circular mounting member 196 is operable to connect to the
lower plate of FIGS. 35-36. A plurality of keyways 198 or notches
to receive corresponding portions of the lower plate 184. A
plurality of stop members 200 or guide members are also provided to
limit a relative rotation of the upper and lower plates and assist
in assembly of the same. The upper plate 182 further comprises an
aperture 199 for receiving a cord, cable or similar feature. The
aperture 199 allows a cable (not shown in FIGS. 33-34) to extend
from and retract into the interior volume 197 of the device.
[0159] FIGS. 35-36 are top and bottom perspective views of a lower
plate 184, respectively. The lower plate 184 as shown in FIGS.
35-36 is sized and operable to mate with and connect to the upper
plate 182 of FIGS. 33-34. Specifically, the outer diameter of the
lower plate is smaller than the outer diameter of the upper plate,
and the lip 207 of the lower plate is operable to nest or otherwise
be provided within the circumference of the lip 192 of the upper
plate. When assembled, the upper and lower plates are provided in a
concentric arrangement with a cord storage area provided within the
internal annular volume of the assembled structure (see FIG. 32,
for example). The lower plate 184 comprises a mounting structure
that is operable to connect to corresponding structure of the upper
plate 182. As shown in FIG. 35, the central aperture 204 of the
lower plate 184 comprises an annular connection member 202 with a
plurality of teeth 211 or protrusions. The teeth 211 are operable
to be inserted into the keyways 198 of the upper plate, and the
plates are rotated to be secured in an assembled state. Stop
members 213 are provided on a second annular ring 203. The stop
members 213 of the lower plate 184 are operable to communicate with
the stop members 200 of the upper plate 182 to limit rotation and
to indicate when proper alignment and connection has been achieved.
The lower plate 184 further comprises an aperture 209 for receiving
a cord, cable, or similar member. As previously discussed, the
apertures 199, 209 of the upper plate and lower plates are operable
to receive different cords. In preferred embodiments, a first cord
is fed through the first aperture 199 and a second cord is fed
through the second aperture 209. The first and second cords are
contemplated as comprising electrical cords to supply power to
different components (e.g. a rotatable motor and a vacuum
unit).
[0160] Although cable management devices of the present disclosure
have been described in combination with and/or intended for use
with floor cleaning devices, it will be recognized that cable
management systems provided herein are not limited to use with any
particular device or machine. Indeed, inventive aspects of the
cable management system(s) exist that are independent of an
intended use of the device. Such devices are contemplated as being
useful with and provided on various devices including, but not
limited to, floor cleaning devices, lawn mowing devices, various
electric vehicles, power tools, etc.
[0161] While various embodiments of the present invention have been
described in detail, it is apparent that modifications and
alterations of those embodiments will occur to those skilled in the
art. However, it is to be expressly understood that such
modifications and alterations are within the scope and spirit of
the present invention, as set forth in the following claims.
* * * * *