U.S. patent number 3,896,521 [Application Number 05/345,417] was granted by the patent office on 1975-07-29 for home cleaning system.
This patent grant is currently assigned to Parise & Sons, Inc.. Invention is credited to Carl Parise.
United States Patent |
3,896,521 |
Parise |
July 29, 1975 |
**Please see images for:
( Certificate of Correction ) ** |
Home cleaning system
Abstract
A combination vacuum and hot water vapor cleaner is disclosed
which may be optionally used as a dry vacuum cleaner, a wet vacuum
cleaner, or a steam cleaner. A variety of steam and vacuum
attachments which may be used with the combination vacuum and hot
water vapor cleaner are also disclosed.
Inventors: |
Parise; Carl (Reno, NV) |
Assignee: |
Parise & Sons, Inc. (Reno,
NV)
|
Family
ID: |
23354956 |
Appl.
No.: |
05/345,417 |
Filed: |
March 27, 1973 |
Current U.S.
Class: |
15/321; 15/339;
15/322; 15/353 |
Current CPC
Class: |
A47L
11/4086 (20130101); A47L 11/4044 (20130101); A47L
11/4088 (20130101); A47L 11/34 (20130101) |
Current International
Class: |
A47L
11/00 (20060101); A47L 11/34 (20060101); A47L
007/00 () |
Field of
Search: |
;15/320,321,322,353,339 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Hornsby; Harvey C.
Assistant Examiner: Moore; C.K.
Attorney, Agent or Firm: Sughrue, Rothwell, Mion, Zinn and
Macpeak
Claims
What is claimed is:
1. A combination vacuum and hot liquid cleaner comprising:
a. a body;
b. a vacuum tank mounted in said body;
c. a hollow riser pipe mounted on the bottom of said vacuum tank
and having an opening near the top thereof providing communication
between the interior of the said hollow riser pipe and the interior
of said vacuum tank;
d. a vacuum pump capable of operating with very humid air mounted
in said body and operatively connected to the bottom of said hollow
riser pipe, whereby vacuum from said vacuum pump may be
communicated to the interior of said vacuum tank;
e. a hollow coupling pipe open at either end mounted in the
exterior of said vacuum tank near the top thereof and projecting
through the exterior thereof to provide a path of fluid
communication between the interior and exterior of said vacuum
tank, the opening of said coupling pipe within said vacuum tank
being pointed toward the bottom of said vacuum tank, whereby vacuum
from said vacuum pump may be communicated to the exterior of said
vacuum tank;
f. a deflector divider removably mounted in said vacuum tank
between said coupling pipe and said riser pipe and adapted to cause
the foreign matter brought into said vacuum tank by the vacuum from
said vacuum pump to be dispersed initially on the bottom of said
vacuum tank, thereby reducing the amount of foreign matter sucked
into said pipe;
g. a diffuser cap removably attached to the top of said riser pipe
and shaped to reduce the amount of foreign matter sucked into said
pipe, said diffuser cap comprising
i. an inner cup-shaped member having a closed top and an opening in
the wall thereof of size and shape approximately equal to the
opening in said riser pipe, said opening in the wall of said inner
cup-shaped member by an amount sufficient to cause said opening to
overlay the opening in said riser pipe and
ii. an outer cup-shaped member having a closed top to the inner
side of which the top of said inner cup-shaped member is attached
and a flat exterior surface parallel to its central axis, the flat
exterior surface being adapted to engage a corresponding surface on
said deflector divider and being located with respect to the
opening in said inner cup-shaped member such that, when it does
engage a corresponding surface on said deflector divider, the
opening in said inner cup-chaped member is positioned over the hole
in said riser pipe;
h. means for selectively activating said vacuum pump;
i. a liquid tank mounted in said body;
j. means for heating liquid contained in said liquid tank;
k. means for selectively activating said means for heating liquid
contained in said liquid tank;
l. a liquid pump mounted in said body;
m. tube means connecting the inlet of said liquid pump to said
liquid tank;
n. tube means connecting the inlet of said liquid pump to the
exterior of said body; and
o. means for selectively activating said liquid pump.
2. A combination vacuum and hot liquid cleaner as claimed in claim
1 wherein said means for selectively activating said means for
heating liquid contained in said liquid tank and said means for
selectively activating said liquid pump are both controlled by a
single control means.
3. A combination vacuum and hot liquid cleaner as claimed in claim
1 wherein said flat exterior surface on said outer cup-shaped
member is formed by cutting away a portion of said outer cup-shaped
member, leaving a U-shaped surface in a plane parallel to the
central axis of said outer cup-shaped member.
4. A combination vacuum and hot liquid cleaner comprising:
a. a body;
b. a vacuum tank mounted in said body;
c. a hollow riser pipe mounted on the bottom of said vacuum tank
and having an opening near the top thereof providing communication
between the interior of the said hollow riser pipe and the interior
of said vacuum tank;
d. a vacuum pump capable of operating with very humid air mounted
in said body and operatively connected to the bottom of said hollow
riser pipe, whereby vacuum from said vacuum pump may be
communicated to the interior of said vacuum tank;
e. a hollow coupling pipe open at either end mounted in the
exterior of said vacuum tank near the top thereof and projecting
through the exterior thereof to provide a path of fluid
communication between the interior and exterior of said vacuum
tank, the opening of said coupling pipe within said vacuum tank
being pointed toward the bottom of said vacuum tank, whereby vacuum
from said vacuum pump may be communicated to the exterior of said
vacuum tank;
f. a diffuser cap removably attached to the top of said riser pipe
and shaped to reduce the amount of foreign matter sucked into said
pipe;
g. a deflector divider removably mounted in said vacuum tank
between said coupling pipe and said riser pipe and adapted to cause
the foreign matter brought into said vacuum tank by the vacuum from
said vacuum pump to be dispersed initally on the bottom of said
vacuum tank, thereby further reducing the amount of foreign matter
sucked into said pipe, said deflector divider comprising
i. a divider plate in height approximately equal to the interior
height of said vacuum tank, in width approximately equal to the
distance from one inner wall of said vacuum tank to the opposite
wall taken along a line touching the exterior of said diffuser cap
on the side thereof facing towards said coupling pipe, and having
apertures therein near the bottom thereof, whereby said divider
substantially inhibits but does not prevent passage of foreign
matter from one side to the other of said deflector divider and
ii. a deflector plate attached to said divider plate approximately
perpendicularly to the surface of said divider plate on the side
thereof facing towards said coupling pipe, said deflector plate
being mounted at a small angle to the vertical such that it slopes
away from said coupling pipe, said deflector plate being closer to
a line coincident with the axis of said coupling pipe at the top
than at the bottom, said deflector plate being in width
approximately equal to the distance from said divider plate to the
adjoining wall of said vacuum tank and extending from approximately
the top of said divider plate to a short distance above the bottom
of said divider plate, whereby foreign matter introduced into said
vacuum tank through said coupling pipe is deflected to a segment of
the bottom of said vacuum tank defined by the adjoining faces of
said divider plate and said deflector plate;
h. means for selectively activating said vacuum pump;
i. a liquid tank mounted in said body;
j. means for heating liquid contained in said liquid tank;
k. means for selectively activating said means for heating liquid
contained in said liquid tank;
l. a liquid pump mounted in said body;
m. tube means connecting the inlet of said liquid pump to said
liquid tank;
n. tube means connecting the inlet of said liquid pump to the
exterior of said body; and
o. means for selectively activating said liquid pump.
5. A combination vacuum and hot liquid cleaner comprising:
a. a body;
b. a vacuum tank mounted in said body;
c. a hollow riser pipe mounted on the bottom of said vacuum tank
and having an opening near the top thereof providing communication
between the interior of the said hollow riser pipe and the interior
of said vacuum tank;
d. a vacuum pump capable of operating with very humid air mounted
in said body and operatively connected to the bottom of said hollow
riser pipe, whereby vacuum from said vacuum pump may be
communicated to the interior of said vacuum tank;
e. a hollow coupling pipe open at either end mounted in the
exterior of said vacuum tank near the top thereof and projecting
through the exterior thereof to provide a path of fluid
communication between the interior and exterior of said vacuum
tank, the opening of said coupling pipe within said vacuum tank
being pointed toward the bottom of said vacuum tank, whereby vacuum
from said vacuum pump may be communicated to the exterior of said
vacuum tank;
f. a diffuser cap removably attached to the top of said riser pipe
and shaped to reduce the amount of foreign matter sucked into said
pipe;
g. a deflector divider removably mounted in said vacuum tank
between said coupling pipe and said riser pipe and adapted to cause
the foreign matter brought into said vacuum tank by the vacuum from
said vacuum pump to be dispersed initially on the bottom of said
vacuum tank, thereby further reducing the amount of foreign matter
sucked into said pipe;
h. means for selectively activating said vacuum pump;
i. a liquid tank mounted in said body;
j. means for heating liquid contained in said liquid tank;
k. means for selectively activating said means for heating liquid
contained in said liquid tank;
l. a liquid pump mounted in said body;
m. tube means connecting the inlet of said liquid pump to said
liquid tank;
n. tube means connecting the inlet of said liquid pump to the
exterior of said body;
o. means for selectively activating said liquid pump;
p. a flexible vacuum line a first end of which is removably
attached to the leg of said coupling pipe projecting from the
exterior of said vacuum tank;
q. a flexible hot liquid line a first end of which is removably
attached to said tube means connecting the outlet of said liquid
pump to the exterior of said body;
r. valve means located in said flexible hot liquid line for
selectively obstructing the passage of the contents of said hot
liquid line;
s. a combination vacuum and hot liquid cleaning head
i. having a generally triangularly shaped chamber therein one side
of which is open to the exterior of said combination vacuum and hot
liquid cleaning head;
ii. having a passageway extending from the apex of said generally
triangularly shaped chamber to the exterior of said combination
vacuum and hot liquid cleaning head;
iii. having means for removably connecting the end of said flexible
vacuum line remote from the first end thereof to said passageway;
and
iv. having at least one coupling with which a spray nozzle to be
recited can be releasably engaged; and
t. a spray nozzle attached to the end of said flexible hot liquid
line remote from the first end thereof, said spray nozzle having an
outlet adapted to emit, when said spray nozzle is releasably
engaged in one of the at least one couplings on said combination
vacuum and hot liquid cleaning head, a generally triangularly
shaped spray parallel to said generally triangularly shaped chamber
in said combination vacuum and hot liquid cleaning head and in the
direction of the open side thereof.
6. A combination vacuum and hot liquid cleaner as claimed in claim
5, wherein said combination vacuum and hot liquid cleaning head
comprises:
a first surface defining one of the generally triangularly shaped
surfaces of said narrow, generally triangularly shaped chamber,
which surface is transparent, and
a second surface defining one of the generally triangularly shaped
surfaces of said narrow, generally triangularly shaped chamber,
which surface is opaque,
whereby foreign matter being drawn into said generally triangularly
shaped chamber by said vacuum pump may be viewed through said first
surface against the background of said second surface.
7. A combination vacuum and hot liquid cleaner comprising,
a. a body;
b. a vacuum tank mounted in said body, said vacuum tank being
adapted to contain a liquid during use of the cleaner;
c. a hollow riser pipe mounted on the bottom of said vacuum tank
and having an opening near the top thereof providing communication
between the interior of the said hollow riser pipe and the interior
of said vacuum tank;
d. a vacuum pump capable of operating with very humid air mounted
in said body and operatively connected to the bottom of said hollow
riser pipe, whereby vacuum from said vacuum pump may be
communicated to the interior of said vacuum tank;
e. a hollow coupling pipe open at either end mounted in the
exterior of said vacuum tank near the top thereof and projecting
through the exterior thereof to provide a path of fluid
communication between the interior and exterior of said vacuum
tank, whereby vacuum from said vacuum pump may be communicated to
the exterior of said vacuum tank;
f. a deflector divider mounted in said vacuum tank between said
coupling pipe and said riser pipe so as to divide the interior of
said vacuum tank into two at least substantially separate volumes
except for at least one aperture in said deflector divider near the
bottom thereof, whereby, when a liquid is contained in said vacuum
tank during use of the cleaner and the liquid fills said vacuum
tank to a height above the at least one aperture in said deflector
divider, foreign matter introduced into said vacuum tank through
said coupling pipe is drawn through the liquid by said vacuum pump
and the liquid acts as a filter for the foreign matter;
g. means for activating said vacuum pump;
h. a liquid tank mounted in said body;
i. a liquid pump mounted in said body;
j. tube means connecting the inlet of said liquid pump to said
liquid tank;
k. tube means connecting the inlet of said liquid pump to the
exterior of said body; and
l. means for activating said liquid pump.
8. A combination vacuum hot liquid cleaner as claimed in claim 7
and further comprising:
1. a flexible vacuum line a first end of which is removably
attached to the leg of said coupling pipe projecting from the
exterior of said vacuum tank;
2. a flexible hot liquid line a first end of which is removably
attached to said tube means connecting the outlet of said liquid
pump to the exterior of said body; and
3. a valve means located in said flexible hot liquid line for
selectively obstructing the passage of the contents of said
line.
9. A combination vacuum and hot liquid cleaner as claimed in claim
8 and further comprising:
a. a combination vacuum and hot liquid cleaning head
i. having a generally triangularly shaped chamber therein one side
of which is open to the exterior of said combination vacuum and hot
liquid cleaning head
ii. having a passageway extending from the apex of said generally
triangularly shaped chamber to the exterior of said combination
vacuum and hot liquid cleaning head, and
iii. having means for removably connecting the end of said flexible
vacuum line remote from the first end thereof to said passageway;
and
b. a spray nozzle attached to the end of said flexible hot liquid
line remote from the first end thereof and to said combination
vacuum and hot liquid cleaning head, said spray nozzle having an
outlet adapted to emit a generally triangularly shaped spray
parallel to said generally triangularly shaped chamber in said
combination vacuum and hot liquid cleaning head and in the
direction of the open side thereof.
10. A combination vacuum and hot liquid cleaner as claimed in claim
9 wherein said combination vacuum and hot liquid cleaning head
comprises:
a first surface defining one of the generally triangularly shaped
surfaces of said narrow, generally triangularly shaped chamber,
which surface is transparent, and
a second surface defining one of the generally triangularly shaped
surfaces of said narrow, generally triangularly shaped chamber,
which surface is opaque,
whereby foreign matter being drawn into said generally triangularly
shaped chamber by said vacuum pump may be viewed through said first
surface against the background of said second surface.
11. A combination vacuum and hot liquid cleaner as claimed in claim
8 and further comprising:
a. a combination vacuum and hot liquid cleaning head
i. having a generally triangularly shaped chamber therein one side
of which is open to the exterior of said combination vacuum and hot
liquid cleaning head
ii. having a passageway extending from the apex of said generally
triangularly shaped chamber to the exterior of said combination
vacuum and hot liquid cleaning head, and
iii. having means for removably connecting the end of said flexible
vacuum line remote from the first end thereof to said
passageway;
b. first means for directing the contents of said flexible steam
line on a surface to be cleaned; and
c. second means for releasably engaging said first means to said
combination vacuum and hot liquid cleaning head.
12. A combination vacuum and hot liquid cleaner as claimed in claim
11 wherein said combination vacuum and hot liquid cleaning head
comprises:
a first surface defining one of the generally triangularly shaped
surfaces of said narrow, generally triangularly shaped chamber,
which surface is transparent, and
a second surface defining one of the generally triangularly shaped
surfaces of said narrow, generally triangularly shaped chamber,
which surface is opaque,
whereby foreign matter being drawn into said generally triangularly
shaped chamber by said vacuum pump may be viewed through said first
surface against the background of said second surface.
13. A combination vacuum and hot liquid cleaner as claimed in claim
7 wherein the opening of said coupling pipe within said vacuum tank
is pointed toward the bottom of said vacuum tank.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention:
This invention relates to cleaning devices for rugs, upholstry, and
the like, and it is specifically adaptable for non-commercial use,
as in the home.
2. Description of the Prior Art:
Both vacuum cleaners and so-called "steam cleaners" (which are
actually hot water vapor cleaners) are old, per se. However, the
invention disclosed herein is the first known unit combining the
two cleaning techniques in a device suitable for use in the
home.
SUMMARY OF THE INVENTION
The combination vacuum and hot water vapor cleaner referred to
hereinafter as a "steam cleaner" disclosed herein contains both a
vacuuming apparatus, including a novel vacuum tank assembly, and a
steam cleaning apparatus, including a liquid tank in which cleaning
liquids may be heated to elevated temperatures and a pump for
conducting the liquid to the object to be cleaned. The vacuuming
apparatus and the steam cleaning apparatus may be used separately
or in combination, whereby the unit as a whole may be used as a dry
vacuum cleaner, a wet vacuum cleaner, or a steam cleaner, at the
user's option. When the vacuuming apparatus and the steam cleaning
apparatus are used simultaneously, the vacuuming apparatus may be
connected to a flexible vacuum line and the steam cleaning
apparatus to a flexible steam line, each of which is in turn
connected to a combination vacuum and steam cleaning head. This
head is designated both to spray hot water or liquid cleaner vapor
on the object to be cleaned and to suck up the hot water or liquid
cleaner previously sprayed on the object along with foreign matter,
such as dirt, lint, etc., removed from the object by the combined
action of the hot water or liquid cleaner vapor spray and the
vacuum.
A particular feature of the invention is that one wall of the
combination vacuum and steam cleaning head can be transparent and
the opposite wall opaque, whereby the water or liquid cleaner and
the foreign matter being drawn into the head can be viewed through
the transparent wall against the background of the opaque wall.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the preferred embodiment of the
invention with its protective cover on.
FIG. 2 is a perspective view of the embodiment of FIG. 1 with the
protective cover removed and a flexible vacuum line attached to the
vacuuming apparatus.
FIG. 3 is a longitudinal sectional view taken along the line 3--3
in FIG. 2.
FIG. 4 is a transverse sectional view taken along the line 4--4 in
FIG. 2.
FIG. 5 is a plan view of the vacuuming apparatus in the embodiment
of FIG. 1.
FIG. 6 is a sectional view taken along the lines 6--6 in FIG.
5.
FIG. 7 is a sectional view taken along the line 7--7 in FIG. 5.
FIG. 8 is a perspective view of a "Clear View" combination vacuum
and steam cleaning head attached to a flexible vacuum line and a
flexible steam line, the whole being particularly adapted for use
with the embodiment of FIG. 1.
FIG. 9 is a sectional view taken along the line 9--9 in FIG. 8.
FIG. 10 is a partially plan, partially sectional view of the
combination vacuum and steam cleaning head shown in FIG. 8.
FIG. 11 is a sectional view of a squeegee combination vacuum and
steam cleaning head attached to a flexible vacuum line and a
flexible steam line, the whole being particularly adapted for use
with the embodiment of FIG. 1.
FIG. 12 is a bottom plan view of the sequeegee combination vacuum
and steam cleaning head shown in FIG. 11.
FIG. 13 is a perspective view of another combination vacuum and
steam cleaning head.
FIG. 14 is a perspective view of still another combination vacuum
and steam cleaning head.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1 shows the preferred embodiment of the present invention
assembled for storage, shipping, or the like. In this
configuration, the total package size is approximately 20 .times.
18 .times. 14, inches and the only parts protruding from the body
20, which may be a single piece of molded plastic or the like, are
a steam switch 22, a vacuum switch 24, a steam line coupler 26, and
a steam switch warning light 28, and an electrical outlet 30. A
protective cover 32, which may be removably attached in any
convenient way, protects the operative parts, all of which, other
than the exceptions noted, are contained within the body 20.
Alternatively, the switches 22 and 24, the coupler 26, the warning
light 28, and the outlet 30 could all be mounted on the upper
surface of the body 20, thereby presenting an entirely protected
configuration when the device is assembled for storage, shipping,
or the like.
FIG. 2 shows the same device shown in FIG. 1 with the protective
cover 32 removed. In this view, the following additional parts are
visible: the top of a removable vacuum tank 34, a cover 36 for the
removable vacuum tank 34, the top of a removable liquid tank 38, a
cover 40 for the removable liquid tank 38, the electrical wire 42
which introduces the power needed to operate the device, an
accessory chamber 44, where the wire 42 can be coiled when not in
use and the various accessories for the device kept when not in
use, and the protruding leg 46 of an L-shaped hollow coupling pipe
48 which is mounted in the top of the vacuum tank 34.
The vacuum tank 34 and the liquid tank 38 are both removably
mounted in sockets in the upper surface of the body 20 so that they
may be easily removed for periodic cleaning. This figure also shows
a flexible vacuum line attached to the protruding leg 46 of the
L-shaped coupling pipe 48. It should, perhaps, be noted at this
spoint that the covers 36 and 40 are preferably transparent so that
the user of the device can observe the level of the liquid
contents, if any, of the two tanks 34 and 38 while the device is in
use.
FIG. 3 shows the operative components of the device in longitudinal
cross-section. These include a vacuuming apparatus, designated
generally by the number 52, and a steam-cleaning apparatus,
designated generally by the number 54.
The vacuuming apparatus 52 includes a vacuum pump 56, which must be
capable of operating with very humid air, and a vacuum tank
assembly 58. The vacuum tank assembly 58 includes the vacuum tank
34, its cover 36, and a hollow riser pipe 60 mounted on the bottom
of the vacuum tank 34 over a corresponding hole 62 in the bottom of
the vacuum tank 34. The riser pipe 60 has an opening 64 near its
top and is open at bottom, thereby being able to snugly receive a
male member 66 protruding from the vacuum pump 56. The top of the
male member 66 contains the inlet for the vacuum pump 56, whereby
its vacuum is communicated to the interior of the vacuum tank 34
through the riser pipe 60 and the opening 64 therein.
Removably attached to the top of the riser pipe 60 is a diffuser
cap 68 which is shaped to reduce the amount of foreign matter
sucked into the riser pipe 60. The diffuser cap 68 is composed of
an inner cup-shaped member 70 and an outer cup-shaped member 72.
The inner cup-shaped member 70 is of an inner diameter sufficient
to fit loosely over the top of the riser pipe 60 and of a height
sufficient to extend beneath the bottom of the opening 64 in riser
pipe 60. It contains an opening 74 which is in size and shape
approximately equal to the opening 64 in the riser pipe 60 and
which is spaced from the bottom of the inner cup-shaped member 70
by an amount sufficient to cause it to overlay the opening 64 in
the riser pipe 60 when it is angularly positioned over it. The
outer cup-shaped member 72 has a closed bottom 76 to the inner side
of which the inner cup-shaped member 70 is attached and a flat
exterior surface 77 (best seen in FIG. 5) parallel to its axis. The
surface 77 is adapted to engage a corresponding surface on a
deflector divider 78 (to be described subsequently), thereby
positioning the opening 74 in the inner cup-shaped member 70 over
the opening 64 in the riser pipe 60. The flat exterior surface 77
can be formed in various ways, but it is preferably formed by
cutting away a portion of the outer cup-shaped member 72, leaving a
U-shaped surface in a plane parallel to its axis.
The vacuum tank assembly 58 also includes the deflector divider 78,
which will be described in detail in connection with FIG. 5. For
now, it is sufficient to note that it is positioned between the
riser pipe 60 and the leg 80 of the L-shaped coupling pipe 48
extending into the interior of the vacuum tank 34 and that it
extends substantially from the bottom to the cover 38 of the vacuum
tank 34 and from one side to the other of the vacuum tank 34. Also,
while not a part of the vacuum tank assembly 58 per se, it should
be noted that the vacuum tank assembly 58 is designed to be used
with a layer of water 84 over the bottom of the vacuum tank 34.
With a device of the overall dimensions previously stated, the
layer of water 84 should be approximately 3 inches deep to start
with.
Thus the longest path which can be taken by foreign objects,
liquids, etc., drawn into the vacuuming apparatus 52 is, as shown
by the arrows in FIG. 3, in through the L-shaped coupling pipe 48,
down to the bottom of the vacuum tank 34, through openings such as
opening 82 shown in FIG. 3, up along the outside of the riser piper
60, between the inner and outer cup-shaped members 70 and 72 of the
diffuser cap 68, through the opening 74 in the former and 64 in the
riser pipe 60, down the interior of the riser pipe 60, and into the
vacuum pump 56. However, in practice most foreign objects will be
trapped in the water 84, and most of the liquid will become a part
of the body of liquid (namely, the layer of water 84) already
contained in the vacuum tank 34. (As previously noted, the cover 38
is preferrably transparent, and this feature allows the user to
gauge when the level of the liquid in the tank 34 has built up to a
dangerous level.) Thus, for the most part only clean, moist air is
drawn into the vacuum pump 56, from which it can be harmlessly
expelled to the exterior of the device, preferably through a plenum
chamber filled with a rock wool or other filtering material to
muffle the noise of the vacuum pump 56.
It should be particularly noted that this device does not require
the use of cleanable or disposable vacuum bags. Rather, the dirt
and other foreign objects are accumulated in the vacuum tank 34,
which is preferably made from a durable, easily cleanable metal.
This tank is then easily dumped and rinsed out once the cleaning
operation is complete, or when the tank becomes full during
use.
The steam cleaning apparatus 54 will now be described. It comprises
the removable liquid tank 38, its cover 40, means 86 for heating a
liquid contained in the liquid tank 38 (such as an immersion heater
of conventional design), and an outlet 88, which must be located at
a level above the top of means 86 if a conventional immersion
heater is used in order to prevent a burn-out of the heating
element. The outlet 88 is connected by a tube 90 to a liquid pump
92, and the liquid pump 92 is connected by a tube 94 to the
coupling 26 mounted on the exterior of the body 20. Means are
provided for selectively activating the liquid pump 92 and the
heating means 86. In the device shown, both such means are
controlled by the steam switch 22, but they may be separately
controlled if it is desired to have the ability to pump cold water
for cleaning certain kinds of surfaces. Also, the steam switch
warning light 28 can be designed to go on either whenever the
heating means 86 is on or only when its temperature goes above a
previously determined level. In the latter case, the light 28 can
be used to warn when the level of the liquid contained in the tank
38 has dropped dangerously low; in the former, observation of the
user through the transparent cover 40 must be relied upon.
FIG. 5 shows the vacuum tank assembly 58 in plan. In addition to
the features already described, this view gives a better idea of
the shaped the novel deflector divider 78. This device is actually
formed from two separate pieces: a divider plate 96 and a deflector
plate 98. The divider plate 96 is in height approximately equal to
the interior height of the vacuum tank 34 and in width
approximately equal to the distance from one inner wall of the tank
to the opposite wall, taken along a line touching the exterior of
the diffuser cap 68. As previously stated, it has one or more
apertures in it, such as the opening 82, which are preferably
located near its bottom, thereby substantially inhibiting but not
preventing passage of foreign matter from one side to the other of
the divider plate 96. The deflector plate 98 is attached to the
divider plate 96 approximately perperdicularly to the plane thereof
on the side thereof facing towards the L-shaped coupling pipe 48.
As may be seen in FIG. 5, the deflector plate 98 is also mounted at
a small angle to the vertical such that it slopes away from the
L-shaped coupling pipe 48, and it is in width approximately equal
to the distance from the divider plate 96 to the adjoining wall of
the vacuum tank 34. Finally, as may be better seen in FIG. 7, the
deflector plate 98 extends from approximately the top of the
divider plate 96 to a short distance above its bottom. Since the
inlet of the L-shaped coupling pipe 48 is nested between the
divider plate 96 and the top of the deflector plate 98, foreign
matter introduced into the vacuum tank 34 through the L-shaped
coupling pipe 48 is deflected to a segment of the bottom of the
vacuum tank 34 defined by the adjoining faces of the divider plate
96 and the deflector plate 98. It may then pass through the
apertures in the divider plate 96 as previously described.
FIGS. 8, 9, and 10 depict a Clear View combination vacuum and steam
cleaning head 100 removably attached to a flexible vacuum line 50
and a flexible steam line 102. The flexible vacuum line 50 and the
flexible steam line 102 may also be used with the squeegee
combination vacuum and steam cleaning head shown in FIGS. 11 and 12
and the other two combination vacuum and steam cleaning heads shown
in FIGS. 13 and 14. It should be noted that disposed at some
convenient spot on the flexible steam line 102 there is a valve
means 104 for selectively obstructing the passage of the contents
of the steam line. This valve means may be used by the user of the
apparatus to control the flow of hot water in the steam line 102
even when the liquid pump 92 is turned on. It is provided because
the user of the apparatus will typically want to turn a spray of
particles of hot water on and off many times while leaving the
vacuum suction on, and it is therefore important to have a more
convenient means of regulating this flow than is provided by the
switch 22.
The Clear View combination vacuum and steam cleaning head 100
itself is better seen in FIGS. 9 and 10 than in FIG. 8. As may be
seen therein, the head 100 comprises a first surface 106 and a
second surface 108, with a narrow, generally triangularly shaped
chamber 110 between them, one side of which is open to the exterior
of the head 100. These surfaces may be fabricated separately or the
whole head 100 may be fabricated as one piece, but the important
point is that one of the surfaces, preferably the surface 106, is
transparent, while the other surface is opaque. This construction
allows the user of the apparatus to view foreign matter being drawn
into the chamber 110 by the vacuum pump 56.
The head 100 also comprises a hollow coupling 112 extending from
the apex of the generally triangularly shaped chamber 110 to the
exterior of the head 100, where the flexible vacuum line 50 may be
removably attached to it, and at least one coupling 114 to which a
spray nozzle 116 may be removably attached. The spray nozzle 116
may in turn be removably attached to the flexible steam line 102 so
that hot water contained in the steam line 102 can be directed into
the spray nozzle 116, from which it issues as a spray of hot water
particles in a triangularly shaped matter 118 parallel to the
generally triangularly shaped chamber 110 in the head 100 and
moving toward the open side thereof. This construction allows the
head 100 to be moved along an object to be cleaned in a direction
toward the surface 108 thereof, thereby first ejecting hot
particles of water or cleaning liquid on the object, then sucking
up the previously ejected hot water or cleaning liquid and,
simultaneouly, particles of foreign matter.
FIGS. 11 and 12 depict a squeegee combination vacuum and steam
cleaning head 120. The operation of this cleaning head is generally
similar to that of the head previously described except that the
spray is discharged within a spray chamber 122 and the entire
operation is confined within a squeegee lip 124 which surrounds
both the spray chamber 122 and the vacuum chamber 110'. As before,
the vacuum chamber 110' is in communication with a passageway 112'
which is releasably attached to the flexible vacuum line 50.
FIGS. 13 and 14 show two additional combination vacuum and steam
cleaning heads, each of which is similar in principal to those
previously described except that the means for direction the
contents of the the flexible steam line 102 on the object to be
cleaned are a plurality of apertures 126, disposed in a line to the
open face of the triangular vacuum chamber, rather than a single
spray nozzle. In each case, the principal is the same, and only the
details have been varied.
CAVEAT
While the present invention has been illustrated by a detailed
description of a preferred embodiment thereof, it will be obvious
to those skilled in the art that various changes in form and detail
can be made therein without departing from the true scope of the
invention. For that reason, the invention must be measured by the
claims appended hereto and not by the foregoing preferred
embodiment.
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