U.S. patent number 3,599,272 [Application Number 05/002,983] was granted by the patent office on 1971-08-17 for vacuum mop.
Invention is credited to John T. Merrick.
United States Patent |
3,599,272 |
Merrick |
August 17, 1971 |
VACUUM MOP
Abstract
A powered vacuum mop has the cleaning liquid line arranged as a
flexible tube inside the vacuum hose and wand and has a pushbutton
valve on the upper end of the wand. Also, an improved cleaning tool
has a main housing receiving the wand, and a separator plate under
the main housing closes off all the space under the housing except
narrow vacuum intake openings along the front and rear edges of the
housing. A perforated plate under the separator plate between the
intake openings carries a porous scrubbing tool, and a squeegee is
arranged in each of the intake openings. The cleaning liquid line
leads to a liquid passageway extending through a separator plate
and into a perforated tube extending over the perforated plate.
Inventors: |
Merrick; John T. (Rochester,
NY) |
Family
ID: |
21703502 |
Appl.
No.: |
05/002,983 |
Filed: |
January 15, 1970 |
Current U.S.
Class: |
15/321; 15/364;
15/396; 15/369 |
Current CPC
Class: |
A47L
11/4075 (20130101); A47L 11/4044 (20130101); A47L
11/29 (20130101); A47L 9/02 (20130101); A47L
11/4088 (20130101) |
Current International
Class: |
A47L
11/29 (20060101); A47L 9/02 (20060101); A47l
011/29 () |
Field of
Search: |
;15/302,320,321,322,353,401 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Scheel; Walter A.
Assistant Examiner: Moore; C. K.
Claims
I claim:
1. In a vacuum mop having a cleaning tool wand; a reservoir, line,
and pump for a cleaning liquid; and a reservoir, hose, and vacuum
pump for waste liquid; the improvement comprising:
a. said cleaning liquid line being a flexible tube arranged inside
said vacuum hose and said wand;
b. a valve arranged on the upper region of said wand for opening
and closing aid cleaning liquid line;
c. a cleaning tool secured to the lower end of said wand;
d. said cleaning tool comprising:
1. a housing configured to receive said wand;
2. a separator plate arranged below said housing to close off
substantially all the space below said housing except long, narrow,
intake openings extending respectively along the front and rear
regions of said housing;
3. a perforated plate arranged under said separator plate between
said intake openings;
4. liquid passage means extending from said cleaning liquid line
through said separator plate;
5. said liquid passage means including a perforated tube extending
over said perforated plate;
6. a porous scrubbing tool secured to the bottom of said perforated
plate; and
7. a squeegee arranged in each of said intake openings and
extending to the region of the bottom of said cleaning tool.
2. The vacuum mop of claim 1 wherein said valve is a pushbutton
valve arranged to be manually operable by a thumb or finger of a
hand gripping the upper region of said wand.
3. The vacuum mop of claim 1 wherein detachable couplings are
arranged for connecting said vacuum hose and said wand and for
forming a junction in said cleaning liquid line in the region of
the upper end of said wand.
4. The vacuum mop of claim 1 wherein said squeegees are pivotally
mounted for moving forward and backward relative to said
housing.
5. The vacuum mop of claim 1 wherein said liquid passage means
includes a junction block carried on said separator plate and
receiving said cleaning liquid line above said separator plate,
said junction block having a liquid passageway extending through
said separator plate, and said perforated tube being connected to
said junction block below said separator plate.
6. The vacuum mop of claim 5 wherein said perforated tube is
arranged to extend transversely over a substantial region of said
perforated plate.
Description
THE INVENTIVE IMPROVEMENT
Powered vacuum mops have been previously suggested, but they have
not been commercially successful because of various deficiencies.
This invention involves recognition of the optimum characteristics
for a vacuum mop, and a discovery of the most efficient and
convenient way of constructing a vacuum mop to meet these
requirements.
SUMMARY OF THE INVENTION
The invention improves on the type of vacuum mop that has a
cleaning tool wand, a reservoir, a line and pump for a cleaning
liquid, and a reservoir, hose and vacuum pump for waste liquid, and
the improvements include arranging the cleaning liquid line as a
flexible tube inside the vacuum hose and the wand, a valve arranged
on the upper region of the wand for opening and closing the
cleaning liquid line, and an improved cleaning tool secured to the
lower end of the wand. The cleaning tool has a housing receiving
the wand, a separator plate below the housing except long, narrow
intake openings extending respectively along the front and rear of
regions of the housing. A perforated plate is arranged under the
separator plate between the intake openings, and a porous scrubbing
tool is secured to the bottom of the perforated plate. A liquid
passageway extends over the perforated plate. A squeegee is
arranged in each of the intake openings, and the squeegees extend
to the bottom of the scrubbing tool for squeegeeing up liquid on
both forward and backward strokes of the tool.
DRAWINGS
FIG. 1 is an isometric view of the inventive vacuum mop;
FIG. 2 is a cross-sectional view of a valve for use in the
inventive mop;
FIG. 3 is a partial, rear elevational view of a cleaning tool for
use with the inventive mop;
FIG. 4 is a cross-sectional view of the tool of FIG. 3, taken along
the line 4-4 thereof;
FIG. 5 is a partial plan view of the tool of FIG. 3, and
FIG. 6 is a cross-sectional view of the tool of FIG. 5, taken along
the line 6-6 thereof.
DETAILED DESCRIPTION
The drawings illustrate one preferred embodiment of the inventive
vacuum mop. It consists of a wheeled vehicle 10 that is
schematically illustrated because it is generally known. It
includes, but does not show, a reservoir and pump for a cleaning
liquid, a reservoir and vacuum pump for waste liquid, a power
supply for the pumps, and accessories for filling, draining, and
other necessary functions. Generally, it sucks up waste liquid and
delivers cleaning liquid on demand.
A vacuum hose 11 extends from vehicle 10 to wand 12, and cleaning
liquid line 13 is a flexible tube threaded through the vacuum hose
and the wand. Preferably, easily detachable couplings connect the
vacuum hose 11 to wand 12 and form a junction in the cleaning
liquid line at the upper end of the wand. A valve 15 is arranged on
the upper end of wand 12 for opening and closing cleaning liquid
line 13. Valve 15 is a pushbutton device working against spring 16
in housing 17 in a passageway in cleaning liquid line 13. Valve 15
is preferably arranged so that a finger or thumb of a hand gripping
the upper end of wand 12 can conveniently operate valve 15.
An improved cleaning tool 20 is secured to the lower end of wand 12
by a detachable coupling. Cleaning tool 20 has a housing 22
carrying wand coupling 21 and closing over the upper part of the
cleaning tool. A closed separator plate 23 is secured to housing 22
and closes off all of the space below housing 22 except intake
openings 24 and 25 that are long, narrow slots respectively along
the front and rear regions of housing 22. The space between
separator plate 23 and housing 22 is subjected to vacuum by vacuum
hose 11, and dirt and water are drawn into intake slots 24 and 25
and through the space between housing 22 and separator plate 23 and
up hose 11. Squeegees 26 and 27 are arranged respectively in intake
slots 24 and 25, and are preferably pivotally mounted to rock
forward and backward as cleaning tool 20 is moved.
A perforated plate 28 having openings 38 is secured under separator
plate 23 by screws 29 that fasten together perforated plate 28,
separator plate 23 and housing 22. Perforated plate 28 extends
between intake slots 24 and 25, and porous scrubber pad 30 is
secured to perforated plate 28 by screws 31. Pad 30 is preferably a
disposable scrubbing tool of a generally known construction and it
can be a spongelike device, a brush, or a bristled or pile
material. Squeegees 26 and 27 extend to the region of the bottom of
pad 30 to engage the floor next to pad 30.
Cleaning liquid line 13 extends through wand couplings 21 and into
junction block 32 carried on separator plate 23. Junction block 32
has a liquid passageway extending downward through separator plate
23, and perforated tubes 33 are secured to junction block 32 below
separator plate 23. Perforated tubes 32 extend transversely over a
substantial region of perforated plate 28, and the ends of
perforated tubes 33 are closed so that liquid dribbles from holes
34 spaced along perforated tubes 33.
Tool 20 is preferably made of lightweight material and formed as
illustrated for simple castings and stampings. A bumper 35 extends
around housing 22, and bumper 35 is preferably formed of an
elastomeric material to protect tool 20 and objects that tool 20
bumps into. The pivotal support for squeegees 26 and 27 is
preferably formed by the unthreaded tips 36 of screws 37 that are
screwed through housing 22 underneath bumper 35.
In operation, the person holding wand 12 presses valve 15 whenever
he desires to wet the floor he is mopping. This sends cleaning
liquid down line 13 to perforated tubes 33 which dribble liquid
over perforated plate 28 and into porous scrubbing pad 30 to wet
the floor as desired. Meanwhile, tool 20 is moved back and forth
over the floor so that scrubber 30 works the cleaning liquid
against the floor to accomplish the desired cleaning.
On a forward stroke of tool 20, rear squeegee 27 collects liquid
left by scrubber 30 so that liquid and dirt are drawn into intake
slot 25 and up vacuum hose 11. On a rearward stroke of cleaning
tool 20, front squeegee 26 similarly collects liquid leaving pad 30
so it can be drawn into intake slot 24 and through the space
between housing 22 and separator plate 23 to vacuum hose 11.
Squeegees 26 and 27 thus work on both forward and backward strokes
of cleaning tool 20 so that dirty liquid from pad 30 is quickly and
easily vacuumed up on both working strokes of tool 20. During this
process, pad 30 tends to dry out and leave less and less water on
the floor, and as the user notices this he again presses valve 15
to supply more cleaning liquid to pad 30.
The floors are thus cleaned quickly and easily with efficient and
convenient liquid supply and takeup as the work proceeds. Constant
vacuuming and squeegeeing ensures that no extra time or labor is
spent vacuuming up liquid, and cleaning liquid is supplied exactly
as needed by merely pressing valve 15 when necessary. This is a
simple matter because valve 15 is operated by a finger or thumb of
the same hand that holds wand 12.
Persons wishing to practice the invention should remember that
other embodiments and variations can be adapted to particular
circumstances. Even though one point of view is necessarily chosen
in describing and defining the invention, this should not inhibit
other embodiments going beyond the semantic orientation of this
application but falling within the spirit of the invention. For
example, those skilled in the art will appreciate that other
embodiments of powered vacuum mops can use the inventive concepts,
and these can be adapted to many specific devices.
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