U.S. patent application number 11/789025 was filed with the patent office on 2008-03-20 for radio frequency controlled central vacuum endfitting.
Invention is credited to Roy Howard JR. Herron.
Application Number | 20080066252 11/789025 |
Document ID | / |
Family ID | 39187032 |
Filed Date | 2008-03-20 |
United States Patent
Application |
20080066252 |
Kind Code |
A1 |
Herron; Roy Howard JR. |
March 20, 2008 |
Radio frequency controlled central vacuum endfitting
Abstract
The present invention includes a flexible hose with at least two
end fitting. The first end fitting is inserted into the wall valve
of the central vacuum cleaner system. The first end fitting is
generally rectangular in shape and may have a kill switch located
thereto. The first end fitting may be used as a receiver. In
addition the first end fitting may include a generally cylindrical
coupling member. The coupling member may include at least one
contact member. The contact member may be located on the outer
circumferential surface of the coupling member. The second end
fitting may be shaped like a handle for controlling the power head.
In addition the second end fitting may be used as the transmitter.
Located on the second end fitting may be an indicator light that
lets the user know if the handle is transmitting to the first end
fitting.
Inventors: |
Herron; Roy Howard JR.;
(Starr, SC) |
Correspondence
Address: |
Thomas A. O'Rourke;Bodner & O'Rourke, LLP
425 Broadhollow Road
Melville
NY
11747
US
|
Family ID: |
39187032 |
Appl. No.: |
11/789025 |
Filed: |
April 23, 2007 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
60794023 |
Apr 21, 2006 |
|
|
|
Current U.S.
Class: |
15/246.2 |
Current CPC
Class: |
A47L 9/2857 20130101;
A47L 9/32 20130101; A47L 9/2884 20130101; A47L 9/2889 20130101;
A47L 9/248 20130101; A47L 9/2894 20130101; A47L 5/38 20130101; A47L
9/246 20130101 |
Class at
Publication: |
015/246.2 |
International
Class: |
A47L 9/24 20060101
A47L009/24 |
Claims
1. A hose assembly comprising a flexible hose having a first end
and a second end, said first end having a handle assembly with a
nozzle, said second end having a connection means removably
securing said hose to a vacuum source, said handle assembly having
a means for transmitting a radio frequency signal to said vacuum
source, said radio frequency signal being capable of activating the
vacuum source so that a vacuum is present at an end of said
nozzle.
2. The hose assembly according to claim 1 wherein said handle
assembly signaling said vacuum source to deactivate said vacuum
source.
3. The hose assembly according to claim 2 wherein said receiver is
at said second end of said hose assembly.
4. The hose assembly according to claim 2 wherein said handle
assembly has an antenna and an RF transmitter in said handle.
5. The hose assembly according to claim 4 wherein a RF receiver is
present in a wall outlet for providing a means for securing a hose
to a vacuum system.
6. The hose assembly according to claim 5 wherein said outlet has a
switch that shuts down said system when said end fitting is removed
from the wall.
Description
[0001] This application claims priority on U.S. Application Ser.
No. 60/794,023 filed Apr. 21, 2006, the disclosures of which are
incorporated herein by reference.
FIELD OF INVENTION
[0002] The present invention relates to improvements in vacuum
systems. More specifically, the present invention relates to a
vacuum handle having a radio frequency transmitter and an
associated receiver for operating a vacuum system, in particular a
vacuum system such as a central vacuum system. The vacuum handle
communicates with the system through a receiver via a radio
frequency remote control. The receiver may be an endfitting on the
hose itself or on the system or elsewhere.
BACKGROUND OF THE INVENTION
[0003] A central vacuum power unit sits in an out-of the-way area
such as your garage, basement, or utility room. Wall inlet valves
are then installed in various locations throughout the home and
connected to the power unit through tubing. Generally, the tubing
can be run through the attic, basement or cold air returns, and
then dropped behind the interior walls to complete the
installation. After installation, the system can be activated by
simply plugging the lightweight hose into a wall inlet. The system
then carries the dirt, dust, animal dander and allergens out of the
room into the main power unit and deposits all of the debris into
the canister. Most commonly used central vacuum cleaner systems
today implement a hose assembly that has at least two end fittings.
Generally, one end fitting is inserted into the wall valve, and the
other end fitting, usually a handle, is attached to the opposite
end of the hose assembly, which allows the user the ability to
easily control the movement of the suction head. As is the case
with most central vacuum systems, there exists the need to control
the motor of the central vacuum cleaner system (hereinafter CV) via
a switch located on the handle. This allows the user to start and
stop the CV without going back and forth to the CV unit, generally
located in an out of the way area of the home. Also associated with
most CV units are wall valves, which come in a variety of shapes
and sizes, not to mention different contact locations.
[0004] This invention relates to a transmitting handle and a
receiver associated with the system in, for example, an end
fitting, that is used with central vacuum systems. Central vacuum
systems are increasingly popular. Central vacuum systems are
commonly found in a variety of buildings, notably family
residences. As mentioned above, a typical central vacuum system
includes a vacuum pump connected to an electric motor for driving
it, a plenum for generating a vacuum and duct work to another
plenum for collecting debris in a vessel such as a bag and allowing
exhaust air to be vented. The motor, vacuum pump and plenums are
generally located in the basement or other relatively remote
locations within a house. A network of tubing or ducts connects the
central vacuum cleaner to each of the rooms to be serviced. One or
more vacuum hose connection points are located in each of the rooms
to be serviced. These openings are generally covered by an airtight
flap or valve to prevent the induction of air through unused
openings and to maintain a vacuum within the system. A hose with a
wand end is connected to one of the connection point openings when
that room is to be vacuumed. The wand normally includes a handle
for the user to hold and a suction head for drawing in the air and
collected debris.
[0005] A difficulty with prior central vacuum systems lies with
turning the central vacuum motor on and off conveniently and
reliably. Generally, because of the normal basement location of the
central pump motor, climbing up and down the stairs every time the
user desires to use the system is inconvenient and tiring. As a
result, several approaches to this problem of providing a
convenient switch for operating the vacuum motor have been
developed in the prior art. One such attempted resolution involved
mounting an electrical switch on the handle of the portable hose
and routing two low voltage wires along the hose to a coupling ring
on the end of the hose, as will be discussed below, this
configuration has some disadvantages.
[0006] As mentioned above within the central vacuum cleaner market
it is desirable and considered a feature for the user to be able to
operate the on/off functions from the handle. Generally the switch
may communicate with central vacuum unit or the power head at the
end of the wand. When the hose is fastened to the wall opening
valve, as by use of a bayonet mount or screw mount, contact points
on the coupling ring engage matching contact points on the fitting
in the wall opening. The contact points on the wall opening fixture
are connected to a light gauge wire pair that runs along the tubing
to an electrical relay which switches the vacuum motor on and off.
This system suffers from at least four serious disadvantages.
First, it is inordinately expensive to provide hoses and tubing or
ducts having a wire pair running the length of the hose and tubing.
Second, these wires are prone to breakage, creating an open circuit
that is difficult to locate and expensive to repair. Third, because
the cleaning implement is often subject to rough use and handling,
the contact points on the coupling members frequently wear out or
break, preventing the user from switching the system on. Finally,
the flexible hoses that are generally used with these central
vacuum cleaner systems are usually equipped with at least two wires
running through the body of the hose. These wires are generally
manufactured from steel, copper and the like, thus making these
types of hoses heavy and a burden to carry around.
[0007] An alternative approach to solving this problem is disclosed
in U.S. Pat. No. 4,829,626, issued to Harkonen et al. on May 16,
1989. Harkonen discloses a method for controlling a vacuum cleaner
that includes a battery operated electrical sound signal generator
mounted in the handle of the wand. When the signal generator is
activated, it generates and transmits a sound signal through the
tubing, which in turn is sensed by a receiver which generates an
electrical pulse to start the motor of the vacuum cleaner. In the
Harkonen system, when an operating lever located in the handle is
moved to the on position a flap in the wand opens, allowing air to
be drawn through the wand and the network of tubing to the vacuum
cleaner and permitting the sound generated by the electrical signal
generator to travel more easily to the receiving equipment located
close to the vacuum cleaner motor. The sound signal is only
generated momentarily in order to start the motor. Once the sound
signal has been transmitted for the predetermined brief time, the
sound generator is turned off. If the motor has started as
intended, the motor keeps running until the flow of air through the
system is blocked. It is intended that the flap in the hose near
the wand be manually swung into a position across the inlet of the
hose, thereby blocking the flow of air. Then a detector detects the
stopping of the flow of air and, in response, turns off the vacuum
motor.
[0008] As mentioned above a typical central vacuum system generally
includes an endfitting, which is inserted into the user's wall
valve. Currently there are approximately 20 different types of wall
valves that are used in today's central vacuum market. Each of
which have different contact locations as well as different inside
diameters. Because of the many different wall valves most users are
limited to use the hose that is supplied with the central vacuum
system. Thus, if a user wanted to attach a special attachment, such
as an agitator or a brush, to the wall valve, there existed the
potential of not having the contacts line up in the wall valve and
the needed attachment.
[0009] Known universal hose end fittings, as these are called,
typically include an electrical connector body having two prongs
connected to power conductors in the hose. The connector body can
be detached from the hose, either by disassembling the end fitting
or by releasing a screw or similar fastener, reversed in direction,
and reattached (the connectors are never disconnected). However,
this requires that the connector body be realigned, so that the
prongs protrude the correct distance in the correct direction to
mate with the female contacts in the outlet, thus making for a most
difficult procedure. Previous prior art have tried to correct this
disadvantage by implementing a universal endfitting, such as U.S.
Pat. No. 5,387,117, issued to Moyher, Jr. et al, assigned to
Electrolux Corp.
OBJECTS OF INVENTION
[0010] It is an object of the present invention to provide an RF
controlled vacuum system for houses and other buildings.
[0011] It is an object of the present invention to provide an RF
controlled vacuum system that is operated from the handle by the
user.
[0012] It is a further object of the invention to provide an RF
controlled vacuum system where the handle has a transmitter that
controls operation of the system through a receiver that may be
connected to the system any of a variety of locations.
[0013] It is an object of the present invention to produce a
central vacuum RF controlled endfitting and handle that is cost
effective to produce and easy to manufacture.
[0014] It is another object of the present invention to produce a
RF controlled endfitting and handle that is easy to maintain and
simple to install.
[0015] It is another object of the present invention to produce a
RF controlled endfitting and handle that may be used in a variety
of different wall valves.
[0016] It is still another object of the present invention to
produce a RF controlled endfitting and handle that will only
communicate with each other when the endfitting is inserted into a
wall valve.
[0017] It is still a further object of the present invention to
produce a RF controlled endfitting and handle that will only
communicate with each other when the appropriate button is pressed
in on the handle.
SUMMARY OF INVENTION
[0018] In the broadest aspects, the present invention is concerned
with a control system which includes a vacuum handle held by a user
that has a radio frequency transmitter that communicates with a
receiver. The receiver is activated by a transmitted radio
frequency signal generated by a transmitter in the handle. The
handle encloses a battery and a transmitter control circuit. A
switch such as a push button switch is provided so that when it is
activated by the user the transmitter generates an RF control
signal via an antenna for transmission to a receiver. In one
embodiment there may be a transmitter which generates a signal. The
signal is broadcast to a system control circuit via an antenna. The
receiver includes an antenna for receiving RF signals from the
transmitter. In one embodiment the transmitter can include an
encoder for generating an encoded signal as the button is depressed
by a user. The encoder is connected to a RF signal generating
circuit for combining the encoded signal with a RF carrier signal.
The encoded RF signal is amplified by an amplifier and broadcast to
the system control circuit via the antenna. The RF signal
generating circuit, amplifier, and antenna can be an LC oscillator.
It is to be understood that other wireless for communicating with
the system control unit can be used. For example, the transmitter
can be provided with circuitry for modulating the encoded output
signal from the encoder into an infrared signal or ultrasonic
signal. The receiver in the system control unit can be provided
with corresponding circuitry for receiving encoded infrared or
ultrasonic signals.
[0019] The receiver can include an antenna for receiving encoded RF
signals from the transmitter. The RF signals are processed by an
amplifier and then demodulated into digital signals by a RF
regenerative detector, which is tuned to the transmitter frequency,
and digitizing operational amplifiers. The digital signals are
decoded by a decoder, which opens the normally closed relay to turn
on the system. When the button is depressed again, the relay
returns to its normally closed relay. It will be appreciated that
there may be other means for using an RF circuit to operate the
switch.
[0020] In the prior art previously citied, Harkonen et al, there
are present significant drawbacks. The battery and sound generator
combination occupy a significant volume within the handle of the
wand, making the wand heavier, larger, and more unwieldy. In the
present invention a battery and a tiny transmitter are only needed,
thus allowing for a smaller size handle. Accordingly, there is a
need for a remote control switching system for central vacuum
systems that can reliably be turned on from the wand without direct
connections back to the main power unit. It would therefore be
desirable to provide remote operation of the central vacuum
appliance so that the operator does not have to go back to the wall
socket to disconnect the system. The present invention also
includes a means for maintaining optimum battery life. In a
preferred embodiment the handle has an RF button so that the
battery will only be discharged when the user presses down on the
button. However, the end fitting, because its circuit does physical
work by holding power to the relay, therefore power preservation is
critical. When the endfitting is disconnected from the wall valve
it is conceivable that the RF circuit within the end fitting would
still power up. One example would be when the user was ready to
store the hose after operation. In order to solve this, a simple
universal kill switch has been implemented, which only when
depressed upon insertion into the wall valve does the circuit
within the end fitting power up to respond to signals from the
handle circuit. The button linked to the kill switch is of special
design, as it must be able to turn the end fitting circuit on if
depressed only partially. In addition it preferably is able to
retract completely into the housing while maintaining the circuit
in a powered up state. The kill switch feature of the present
invention is also compatible with the many different types of wall
valves in the market today. This is accomplished by a spring
loaded, telescoping button, the spring force of which is designed
to overcome the kill switch spring only in the event the button is
depressed.
[0021] Perhaps the greatest difficulty with the method of Harkonen
lies in the means for stopping the vacuum cleaner. In the normal
course of using a vacuum cleaner, many possible events that could
block the flow of air through the hose suggest Harkonen themselves.
In some cases, merely pressing the vacuuming head hard against a
surface to be vacuumed can block the flow of air sufficiently to
cause the vacuum motor to stop. This is particularly the case when
the vacuum head is operated near or on non-porous materials.
Further, items too large to pass conveniently through the tubing
may be inadvertently sucked into the vacuum head, thereby turning
it off.
[0022] In addition to the improved switch of the present invention,
the end fitting inserted into the wall valve is also equipped with
an improved universal adapter. Prior art such as Moyer, Jr. et.
al., implements a reversible rotably attached connector body,
however with this type of end fitting, one could only use this type
of end fitting with a limited type of wall valves. In addition,
this type of universal end fitting is bulky, and there exists the
potential for bending or breaking of the leads. The universal
adapter of the present invention has individual contact pads that
permits use with a variety of different wall valves, via these
pads. In addition, the contact pads are spring loaded, thus these
two features allow the end fitting of the present invention to
maintain a snug fit regardless of what manufacturer's wall valve is
used.
[0023] It is now virtually standard to have a switch built into the
outlet so that insertion of the metal probe of a vacuum hose acts
to contact a low voltage supply, which operates the central vacuum
motor. The hose is then extended from the wall outlet to a simple
handle/nozzle. The handle/nozzle may be operated with a brush, but
the general idea is to suck the dirt into the system and into the
central dust collector. The present invention allows the user to
efficiently and easily turn the central vacuum cleaner on and off
via RF. Although the use of RF for remote control is not new, one
has yet to utilize it with a CV in a manner like the applicant. The
present invention liberates the user of the need for these heavy
flexible hoses, because the handle communicates with the end
fitting via Radio Frequency, (hereinafter RF).
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] FIG. 1 is one example of a view of two end fittings which
communicate through radio frequency.
[0025] FIG. 2 is a side view of the handle end.
[0026] FIG. 3 is a perspective view of the end fitting that
connects, for example, to a wall.
[0027] FIG. 4 is a view of the wall end fitting and a wall
outlet.
[0028] FIG. 5 is a view of the end fitting connected to the wall
outlet.
[0029] FIG. 6 is a view of the opening of the wall outlet with the
cover displaced.
[0030] FIG. 7 is a bottom perspective view of the end fitting of
FIG. 3.
[0031] FIG. 8 is a top perspective view of the end fitting of FIG.
3.
[0032] FIG. 9 shows the individual contact pad of end fitting of
FIG. 3.
[0033] FIG. 10 shows a portion of the handle of the present
invention.
[0034] FIG. 11 shows the RF button being depressed.
[0035] FIGS. 12 and 13 show the kill switch button.
[0036] FIG. 14 show the kill switch button being depressed.
[0037] FIG. 15 shows the kill switch button being retracted into
the housing.
[0038] FIG. 16 shows the RF handle button being depressed once to
turn the device on.
[0039] FIG. 17 shows the RF handle button being depressed a second
time to turn the device off.
[0040] FIG. 18 is a side view of each end of a hose with the end
fitting and the handle.
[0041] FIG. 19 is a view of the components of the end fitting.
[0042] FIG. 20 is an exploded view of the end fitting.
[0043] FIG. 21 is an exploded view of the handle assembly.
[0044] FIG. 22 is an alternative exploded view of the handle
assembly.
[0045] FIG. 23 is a flow chart showing a representative operation
of the device of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0046] As seen in FIG. 1 there is one example of an embodiment of
the central vacuum cleaner hose assembly 10, (hereinafter hose
assembly) of the present invention. Although shown in connection
with a receiver on an end fitting that is on one end of the hose,
it will also be appreciated that the receiver can be elsewhere. For
example, the receiver can be on the wall outlet or on the vacuum
generating portion of the system of any other suitable location.
The hose assembly of the present invention includes a first end
fitting 20, a second end fitting 30, and a flexible hose 70. It
will also be appreciated by those skilled in the art that the shape
of the handle 20 and the end fitting 30 described in connection
with one embodiment of the present invention can vary as desired.
The hose may be any one of the hoses that are typically used in the
art. As mentioned in the background of the invention, the switch in
the handle may communicate with either the end fitting or the power
head, for simplicity one will discuss the handle/end fitting
configuration, taking note that the handle/power head configuration
works similarly.
[0047] In the preferred embodiment, there is a hose assembly 10
connected with a central vacuum system. It must be pointed out that
the hose assembly of the present invention may be implemented with
all types of central vacuum systems known in the art. As is with
all central vacuum systems, there exist wall valves located
throughout different areas of the house. A typical wall valve 60
may be seen in FIGS. 4-6. Generally a wall valve will have an
appearance similar to an electrical outlet. However, different
types of central vacuum systems may implement different shapes and
sizes, for the purposes of brevity; one will describe the hose
assembly of the present invention as used with a standard central
vacuum system. Again drawing one's attention to FIGS. 4-6, one can
see a standard wall valve 60 associated with a standard central
vacuum system. Wall valve 60 may have a generally rectangular shape
with a generally circular aperture 60a located near its center.
Wall valve 60 may be mounted onto the wall via any suitable
mounting means known in the art. In the present embodiment one
mounted wall valve 60 to the wall with standard wood screws.
Drawing one's attention to inner circumferential surface 61 one can
see two contact points A and B. Contact points A and B may be
located anywhere on inside circumferential surface 61, in one
embodiment contacts A and B may be located on the lower portion of
circumferential surface 61, as seen in FIG. 4. In another
embodiment one may have contacts A and B located on the upper
portion of circumferential surface 61 of wall valve 60, as seen in
FIG. 6. With the present invention placement of the contacts A and
B may be anywhere, because of the unique pad contact located on
first end fitting 20. In normal operation the user will insert
first end fitting 20 into aperture 60a until the front surface 21a
of first end fitting 20 contacts or is in proximity to the front
surface 62 of wall valve 60, as seen in FIG. 5. Once inserted,
first end fitting 20 will then communicate with second end fitting
30 i.e. the handle assembly, via RF, and then transmit the desired
signal to the central vacuum system It must stressed again that
different types of wall valves have different configurations, and
as such first end fitting 20 may connect to different wall valves
in different ways.
[0048] As mentioned previously the hose assembly 10 of the present
invention has two end fittings. First end fitting 20 may have a RF
assembly 21. RF assembly 21 may have a front surface 21a, a rear
surface 21b, a top surface 21c, a bottom surface 21d, and two
opposing side surfaces 21e and 21f, as seen in FIG. 3. Located on
rear surface 21b may be an aperture 22 used to receive an end of
the hose 70. Alternatively, the RF assembly can be fitted over the
outer surface of the hose near the end thereof. In addition,
located on front surface 21a may be another aperture 22a used for
exhausting debris into the collector of the central vacuum system.
Aperture 22a may also be used for retaining universal portion 23 to
end fitting 20. End fitting 20 may be of such dimensions so as to
be able to house a battery and/or a battery pack, and a receiver
(see FIG. 19). In addition, end fitting 20 houses a tiny receiver.
Extending tangentially from front surface 21a may be a generally
circumferential flange 24. Flange 24 may have an outer
circumferential surface 24a and a top surface 24b and bottom end
24c, as seen in FIGS. 7 and 8. Extending in a generally
perpendicular direction toward top surface 21c may be a generally
rectangular member 25 that may also extend from top surface 24b to
bottom surface 24c, as seen FIG. 13. Member 25 may extend the total
length front surface 21a or only partially therefrom. In the
preferred embodiment one had member extend the entire length of
front surface 21a so as to contact top surface 21c, as seen in FIG.
1. Member 25 may be of any suitable shape known in the art
including, but not limited to a circle, a square, a rectangle, or
the like. In the preferred embodiment one implemented a generally
rectangular shape for member 25. In addition, a portion of member
25 may slant towards top surface 21c, as in the preferred
embodiment, or member 25 may not so as to form a rectangle. The
shape of member 25 will depend on what the user desires. Member 25
may be used to house kill switch 26, as seen in FIGS. 12 and 13.
Member 25 may also mate with a recess 25a in wall valve 60.
[0049] Kill switch 26 may include an internal spring 26b and a
button 26a. Switch button 26a may be located on front surface 25a
of member 25. In addition switch button 26a may extend
perpendicularly from front surface 25a of member 25. The distance
that switch button 26a will extend will be determined by the
manufacturer during fabrication of end fitting 20. The shape of
switch 26a may be any suitable shape known in the art including,
but not limited to a circle, a square, a rectangle, or the like. In
the preferred embodiment one implemented a generally cylindrically
shape for button 26a of switch 26. Switch button 26a may be
implemented to automatically shut down end fitting 20, when end
fitting 20 is removed from wall valve 60. In order to be compatible
with the many different varieties of wall valves on the market
today, switch button 26a may be a spring loaded, telescoping
button, which may be designed to overcome internal spring 26b of
switch 26. In addition, switch button 26a may be designed to turn
end fitting circuit on if depressed partially, and switch button
26a may be designed to be able to retract completely into member 25
while maintaining the circuit in a powered up state. In normal
operation when end fitting 20 is inserted in to wall valve 60,
switch button 26a will overcome the force of internal switch spring
26b, thus activating internal circuitry of end fitting 20. When end
fitting is removed from wall valve 60, switch button 26a will be
forced back to an extended position by internal switch spring 26b,
thus powering down internal circuitry of end fitting 20.
[0050] Extending from top surface 24b of flange 24 may be a
generally cylindrical shape coupling member 40, as seen in FIG. 12.
Coupling member 40 may have an inner and outer circumferential
surface, 41a and 41b respectively. In addition the inner and outer
diameters of these surfaces may be varied depending on the specific
needs of the designer. Coupling member 40 may have one or a
plurality of slots located around its circumference. Slots 42 may
be of any suitable shapes known in the art, in the present
invention one implemented generally rectangular shaped slots. Slots
42 in one embodiment may extend from front edge 43 to rear edge
43a. In the preferred embodiment two slots extend from front edge
43 to a mid point on coupling member 40, as seen in FIGS. 8, 12 and
14. Coupling member 40 may also have recesses 45 located adjacent
to top surface 24c of flange 24. One may have a single or multiple
recesses. In the preferred embodiment one implemented four
recesses. These recesses are aligned with contact pads 50 of
coupling member 40. Coupling member 40 may have contact pads 50.
Contact pads 50 are generally concave in shape so as to be able to
fit inside a portion of coupling member 40. In another embodiment
one may have contact pads 50 located around the entire
circumference of coupling member 40. In addition, contact pads 50
may be made of any suitable conductive material known in the art
including, but not limited to copper, aluminum, nickel and the
like. Contact pads 50 may be spring loaded, which allows end
fitting 20 to maintain contact with a variety of different wall
valves. Contact pads 50 may range in a variety of different sizes,
that is to say they may be square, round, rectangular, or any other
suitable geometric shape in known in the art. Contact pads 50 may
be connected to the internal circuitry of end fitting 20. In normal
operation when kill switch button 26a of kill switch 26 is
depressed the internal circuitry of end fitting 20 will transmit an
electrical power to the central vacuum system motor, thus allowing
the user the ability to vacuum up debris and the like.
[0051] As mentioned above hose assembly 10 has two end fitting 20
and 30, the first 20 is used as a receiver, as previously
discussed, and the second 30 is used as a transmitter. In the
preferred embodiment a vacuum handle 30 is the second end fitting.
Vacuum handle 30 may be any suitable shaped handle known in the
art. In the preferred embodiment there is a handle 30 that has a
member 31 for grasping the handle and a member 31a used for
attaching to the desired attachment. Grasping member 31 may be
generally rectangular in shape, as seen in FIG. 1. However, one may
implement a variety of different shapes for grasping member 31, in
a different embodiment grasping member may be ring shaped. The key
feature of the handle of the present invention is that it should be
able to house the internal circuitry needed to transmit the desired
RF signal to end fitting 20. In addition, grasping member 31 may
have an activation means which may for example be a switch or a
button mechanism 32 or the like. Button mechanism 32 may be any
suitable button mechanism known in the art. In the preferred
embodiment one implemented a spring loaded button that may be
depressed when the user desires to activate or deactivate the
central vacuum system. In addition button 32 may be located
anywhere on the handle. In the preferred embodiment one implemented
a button on the top front surface of grasping member 31. This
position for button 32 was preferred, because of the relative ease
one would have in depressing button 32 with one's thumb. In
addition, one may have an indicator light 33 located near button
mechanism 32. Indicator 33 may be implemented so as to allow the
user the ability to know when the central vacuum cleaner is
activated and deactivated. There may also be a second activation
means 32a which can be used to operate an attachment on the nozzle
end of the handle. Attaching member 31a may be any suitable
attaching member known in the art. In the preferred embodiment one
implemented a generally cylindrical tube. This attaching member was
preferred, because a majority of attachments have the same
cylindrical tube shape, thus a variety of different attachments may
be implemented.
[0052] Hose assembly 10 as mentioned previously may have a hose
member 70. Any suitable type of known hose in the art may be used
including, but not limited to a single wire reinforced, a double
wire reinforced, and a hose with no reinforcement. In the preferred
embodiment one implemented a reinforced light weight flexible hose.
As mentioned in the background of the invention, this invention can
eliminate the need for the wire reinforced hose if desired in some
applications, because no electricity is being transmitted through
the hose. In normal operation one end of hose 70 will be attached
to end fitting 20 and the other end of hose 70 will be attached to
second end fitting 30.
[0053] In normal operation, with all the features discussed above
working together, the user simply inserts end fitting 20 into wall
valve 60. Once inserted kill switch button 26a of kill switch 26
will be depressed, thus activating the internal circuitry of end
fitting 20. The user can then remotely operate the central vacuum
system by depressing button 32 of grasping member 31. When the user
desires to deactivate the central vacuum system, the user simply
depresses button 32 of grasping member 31 a second time. Thus,
there is no need for the user to go back and forth to the central
vacuum system, and there is no need to lug around a heavy hose.
[0054] FIG. 19 is an exploded view of an example of an RF assembly
20. There is a first housing member 101 and a second housing member
102 that fit together to form the RF assembly. The first member has
an opening on side 21b for receiving an end to the hose 70. An end
of hose 70 can abut the inside edge 103 of stem 104. The stem has a
sleeve portion 105 and an inside edge 103 and an outside edge 106.
The first member 101 has an open area 107 for receiving a battery
108. Cover 111 may be placed over the open area 107 to protect the
battery. One or more cushioning means 109 may be used to retain the
battery in position. Board 110 is a RF receiver and antenna. This
may be positioned in the recess 110a in the end fitting.
[0055] The assembly also has outer hose anchor sleeve 112. Anchor
sleeve 112 receives an end of hose over the raised ridges 112a. The
anchor sleeve is inserted into the open end 101b of first housing
member 101 opposite open 101a. Swivel 113 is inserted into the
assembly to permit the hose to rotate about the assembly during use
or being moved.
[0056] The second housing member 102 also has a stem 20 which is
connected to the outlet 60. The second member 102 has one or more
recesses 45 for receiving contacts 50. The contact 50 has a contact
spring 120 that keeps the contact in position. A contact support
121 holds the contact in the recess 45. Each contact is
electrically connected to the board 110 by wires 110b. As shown in
FIG. 19, one pair of contacts 50a and 50b are electrically
connected by wire 122. Contacts 50c and 50d are similarly
connected. The button 26a may be a single member or may have an
extension 26c.
[0057] The handle 30 may be made up of two clam shell members 200
and 201 that fit together to form the handle assembly 30. The
handle assembly has one end 202 that receives the hose 70 and a
second end 203 that receives the nozzle 204.
[0058] The handle end 202 that receives the hose 70 may have a ball
valve 204 that is held in place by a swivel 205 and a clip ring
206. Over the clip ring outer hose handle connector 207 may be
positioned.
[0059] The nozzle end 203 has nozzle extender 208 that extends from
the end 203. Over the end of the nozzle extender opposite the end
203 a bleed valve 209 may be positioned over which a nozzle 204 is
placed.
[0060] The hand grip portion 31 of the handle 30 may have a recess
for receiving a battery 210. The battery may be held in place by a
cover 211. The RF transmitter board and antenna 212 is positioned
in a recess in the arm and is connected to button 32. As the button
is initially depressed, the RF transmitter sends a signal to the
receiver to open the switch to operate the vacuum. When the button
is again depressed, the RF transmitter signals the receiver to shut
off the system.
[0061] As various changes could be made in the above constructions
without departing from the scope of the invention, it is intended
that all matter contained in the above description shall be
interpreted as illustrative and not in a limiting sense. In the
view above it will be seen that several objects of the invention
are achieved and other advantageous results attained.
* * * * *