US4156952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet soil extractor having a powered brush
Assignee: CHEMKO IND Inc
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Filing: 1977-10-04
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Granted: 1979-06-05
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Expires: 1997-10-04
Abstract
Abstract A self contained compact carpet soil extractor includes a vacuum tube for singularly supporting a vacuum head, nozzles through which the cleaning solution is dispensed, a pivotally mounted powered brush and motor means for driving the brush; additionally, the source of vacuum, a supply of cleaning solution under pressure and a waste tank are directly or indirectly suspended from the vacuum tube. One variant includes means for supporting a quantity of the cleaning solution upon the vacuum tube and a further variant relies upon external sources to provide vacuum and cleaning solution. Support upon the carpet for the extractor is provided by the mouth of the vacuum head, the brush and a curved spring skid; the force exerted by the brush and the depth to which the brush extends into the carpet nap is primarily a function of the bristle length with respect to the plane defined by the vacuum head mouth and the skid.
Inventors
- 👤 Patrick E. Lynch, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:50
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4063; A47L11/4069; A47L11/29; A47L11/30; A47L11/307; A47L11/34; A47L11/4036; A47L11/4038; A47L11/4044; A47L11/4075; A47L11/408; A47L11/4088
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
239 words
A manually propelled carpet soil extractor for cleaning carpets and operable in conjunction with a source of vacuum and a source of cleaning solution under pressure, said carpet soil extractor comprising in combination: a. a vacuum tube connected to said source of vacuum, said vacuum tube having a lower end for drawing waste water from the carpet; b. a vacuum head attached to the lower end of said vacuum tube for vacuuming the carpet, said vacuum head including a mouth; c. a brush for scrubbing the carpet, said brush being in general longitudinal alignment with the longitudinal axis of said mouth; d. a pivotally depending linkage assembly suspended from the lower end of said vacuum tube for supporting said brush and imparting a reciprocating arcuate motion to said brush; e. a motor for reciprocally pivoting said linkage assembly, said motor including a rotating output shaft, a casing and means for attaching said casing to said vacuum tube; f. means for translating the rotary motion of said output shaft into reciprocating pivotal motion of said linkage assembly; g. a curved spring skid for supporting, in conjunction with said vacuum head, said carpet soil extractor upon the carpet; h. a plate secured to said casing of said motor for supporting said spring skid; and i. a nozzle assembly secured to said plate and in fluid communication with said source of cleaning fluid under pressure for spraying the carpet with cleaning solution.
Claim 2
Dependent Claim
239 words
A manually propelled carpet soil extractor for cleaning carpets and operable in conjunction with a source of vacuum and a source of cleaning solution under pressure, said carpet soil extractor comprising in combination: a. a vacuum tube connected to said source of vacuum, said vacuum tube having a lower end for drawing waste water from the carpet; b. a vacuum head attached to the lower end of said vacuum tube for vacuuming the carpet, said vacuum head including a mouth; c. a brush for scrubbing the carpet, said brush being in general longitudinal alignment with the longitudinal axis of said mouth; d. a pivotally depending linkage assembly suspended from the lower end of said vacuum tube for supporting said brush and imparting a reciprocating arcuate motion to said brush; e. a motor for reciprocally pivoting said linkage assembly, said motor including a rotating output shaft, a casing and means for attaching said casing to said vacuum tube; f. means for translating the rotary motion of said output shaft into reciprocating pivotal motion of said linkage assembly; g. a curved spring skid for supporting, in conjunction with said vacuum head, said carpet soil extractor upon the carpet; h. a plate secured to said casing of said motor for supporting said spring skid; and i. a nozzle assembly secured to said plate and in fluid communication with said source of cleaning fluid under pressure for spraying the carpet with cleaning solution.
Claim 3
Dependent Claim
39 words
The carpet soil extractor as set forth in claim 1 wherein said translating means comprises a cam attached to said output shaft and having an offset pin extending therefrom and a link interconnecting said pin and said linkage assembly.
Claim 4
Dependent Claim
21 words
The carpet soil extractor as set forth in claim 2 wherein said linkage assembly includes means for detachably attaching said brush.
Claim 5
Dependent Claim
22 words
The carpet soil extractor as set forth in claim 3 wherein said spring skid includes an upper portion for shielding said motor.
Claim 6
Dependent Claim
22 words
The carpet soil extractor as set forth in claim 4 wherein said vacuum tube and said vacuum head comprise a unitary structure.
Claim 7
Dependent Claim
30 words
The carpet soil extractor as set forth in claim 4 including a bail secured to said vacuum tube for aiding in movement of said carpet soil extractor across the carpet.
Claim 8
Dependent Claim
35 words
The carpet soil extractor as set forth in claim 2 wherein said nozzle assembly includes a tube and at least one orifice disposed in the bottom wall of said tube for discharging the cleaning solution.
Claim 9
Dependent Claim
41 words
The carpet soil extractor as set forth in claim 7 wherein each said orifice comprises a circular cavity having a cone-shaped lower end and an arcuate groove extending from the outer surface of the bottom wall into said cone-shaped lower end.
Claim 10
Dependent Claim
106 words
The carpet soil extractor as set forth in claim 1 wherein said source of cleaning solution under pressure comprises in combination: a. a container for housing the cleaning solution and means for securing said container to said vacuum tube; b. a pump secured to said plate for pumping the cleaning solution; c. means for transmitting power from said motor to said pump; d. tubing means for conveying the cleaning solution from said container to said pump; and e. further tubing means for conveying the cleaning solution from said pump to said nozzle assembly; whereby, said carpet soil extractor supports said source of cleaning fluid under pressure.
Claim 11
Dependent Claim
39 words
The carpet soil extractor as set forth in claim 9 wherein said translating means comprises a cam attached to said output shaft and having an offset pin extending therefrom and a link interconnecting said pin and said linkage assembly.
Claim 12
Dependent Claim
25 words
The carpet soil extractor as set forth in claim 10 wherein said transmitting means includes pulley drive means for interconnecting said cam with said pump.
Claim 13
Dependent Claim
21 words
The carpet soil extractor as set forth in claim 11 wherein said linkage assembly includes means for detachably attaching said brush.
Claim 14
Dependent Claim
22 words
The carpet soil extractor as set forth in claim 12 wherein said spring skid includes an upper portion for shielding said motor.
Claim 15
Dependent Claim
22 words
The carpet soil extractor as set forth in claim 12 wherein said vacuum tube and said vacuum head comprise a unitary structure.
Claim 16
Dependent Claim
30 words
The carpet soil extractor as set forth in claim 12 including a bail secured to said vacuum tube for aiding in movement of said carpet soil extractor across the carpet.
Claim 17
Dependent Claim
35 words
The carpet soil extractor as set forth in claim 10 wherein said nozzle assembly includes a tube and at least one orifice disposed in the bottom wall of said tube for discharging the cleaning solution.
Claim 18
Dependent Claim
41 words
The carpet soil extractor as set forth in claim 16 wherein each said orifice comprises a circular cavity having a cone-shaped lower end and an arcuate groove extending from the outer surface of the bottom wall into said cone-shaped lower end.
Claim 19
Dependent Claim
140 words
The carpet soil extractor as set forth in claim 1 including: a. a container attached to said vacuum tube for housing the cleaning solution and receiving the waste water; b. said source of cleaning solution comprising: i. a collapsible bag disposed within said container for housing the cleaning solution; ii. pump means secured to said plate for conveying the cleaning solution from said collapsible bag to said nozzle assembly under pressure; c. said source of vacuum comprising a vacuum motor in fluid communication with said container for establishing a low pressure environment within said container; and d. an outlet disposed in said vacuum tube within said container for discharging the waste water from said vacuum tube into said container; whereby, said cource of vacuum and said source of cleaning solution under pressure are self contained within said carpet soil extractor.
Claim 20
Dependent Claim
39 words
The carpet soil extractor as set forth in claim 18 wherein said translating means comprises a cam attached to said output shaft and having an offset pin extending therefrom and a link interconnecting said pin and said linkage assembly.
Claim 21
Dependent Claim
25 words
The carpet soil extractor as set forth in claim 19 wherein said transmitting means includes pulley drive means for interconnecting said cam with said pump.
Claim 22
Dependent Claim
21 words
The carpet soil extractor as set forth in claim 20 wherein said linkage assembly includes means for detachably attaching said brush.
Claim 23
Dependent Claim
22 words
The carpet soil extractor as set forth in claim 21 wherein said spring skid includes an upper portion for shielding said motor.
Claim 24
Dependent Claim
22 words
The carpet soil extractor as set forth in claim 21 wherein said vacuum tube and said vacuum head comprise a unitary structure.
Claim 25
Dependent Claim
34 words
The carpet soil extractor as set forth in claim 21 wherein said container includes an openable top for emptying the waste water from said container and for refilling said collapsible bag with cleaning solution.
Claim 26
Dependent Claim
19 words
The carpet soil extractor as set forth in claim 24 wherein said vacuum motor is disposed within said top.
Claim 27
Dependent Claim
29 words
The carpet soil extractor as set forth in claim 25 including a handle extending from said top for aiding in movement of said carpet soil extractor across the carpet.
Claim 28
Dependent Claim
23 words
The carpet soil extractor as set forth in claim 26 wherein said container is cylindrical and wherein said top is a conical shroud.
Claim 29
Dependent Claim
35 words
The carpet soil extractor as set forth in claim 19 wherein said nozzle assembly icludes a tube and at least one orifice disposed in the bottom wall of said tube for discharging the cleaning solution.
Claim 30
Dependent Claim
41 words
The carpet soil extractor as set forth in claim 28 wherein each said orifice comprises a circular cavity having a cone-shaped lower end and an arcuate groove extending from the outer surface of the bottom wall into said cone-shaped lower end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-04 | 1982-12-04 | 1983-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-04 | 1986-12-04 | 1987-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-04 | 1990-12-04 | 1991-06-05 | $7700.00 | Window Closed / Lapsed |