Patent US3663985A successfully refreshed from Google Patents.
US3663985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor scrubbing machine
Assignee: Cooper Industries LLC
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Filing: 1970-07-15
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Granted: 1972-05-23
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Expires: 1990-07-15
Abstract
Abstract A compact floor scrubbing machine is provided. The floor scrubbing machine is relatively small, with a short length rendering the machine more easily manipulated or maneuverable than floor scrubbing machines heretofore known. A cleaning solution supply tank is mounted on a rear portion of the machine and motors are located forwardly thereof for driving the brushes of the machine and an exhaust blower. A removable recovery tank is located adjacent the two motors and partly thereabove, between the supply tank and the motors, so that maximum compactness is achieved for the machine. The recovery tank is easily separable from the rest of the machine and yet automatically seals with air passages for the exhaust blower and for a rear squeegee when placed on the machine.
Inventors
- 👤 Jack L Burgoon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:29
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4052; A47L11/4055; A47L11/29; A47L11/30; A47L11/4013; A47L11/4016; A47L11/4025; A47L11/4036; A47L11/4044
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
158 words
A floor scrubbing machine comprising supporting means, rotatable brush means at a forward portion of said supporting means, a first motor mounted on a forward portion of said supporting means, means connecting said rotatable brush means and said first motor for driving said brush means, a secoNd motor located at the forward portion of said supporting means, an exhaust blower driven by said second motor, said blower having means forming an air inlet, a squeegee, means connecting said squeegee to a portion of said supporting means, means forming an air passage connected to said squeegee and terminating at a surface of said supporting means, a removable tank supported by said supporting means, said second motor and said exhaust blower being located outside said tank, said tank having a first opening in a lower portion thereof communicating with said blower air inlet and having a second opening communicating with said air passage means when supported on said supporting means.
Claim 2
Dependent Claim
158 words
A floor scrubbing machine comprising supporting means, rotatable brush means at a forward portion of said supporting means, a first motor mounted on a forward portion of said supporting means, means connecting said rotatable brush means and said first motor for driving said brush means, a secoNd motor located at the forward portion of said supporting means, an exhaust blower driven by said second motor, said blower having means forming an air inlet, a squeegee, means connecting said squeegee to a portion of said supporting means, means forming an air passage connected to said squeegee and terminating at a surface of said supporting means, a removable tank supported by said supporting means, said second motor and said exhaust blower being located outside said tank, said tank having a first opening in a lower portion thereof communicating with said blower air inlet and having a second opening communicating with said air passage means when supported on said supporting means.
Claim 3
Dependent Claim
36 words
A floor scrubbing machine according to claim 1 characterized by said second motor being beside said first motor, said exhaust blower being above said second motor, and said blower air inlet means being above said blower.
Claim 4
Dependent Claim
37 words
A floor scrubbing machine according to claim 1 characterized by both of said openings of said tank being formed in bottom walls thereof, and an air tube communicating with each of said openings and extending upwardly therefrom.
Claim 5
Dependent Claim
24 words
A floor scrubbing machine according to claim 3 characterized further by sealing rings located adjacent said tank openings at outer surfaces of said tank.
Claim 6
Dependent Claim
21 words
A floor scrubbing machine according to claim 3 characterized by means forming a baffle between upper ends of said air tubes.
Claim 7
Dependent Claim
22 words
A floor scrubbing machine according to claim 5 characterized by a lid on said tank and said baffle depends from said lid.
Claim 8
Dependent Claim
29 words
A floor scrubbing machine according to claim 3 characterized by means forming a vertically extending cylindrical baffle around an upper end of one of said tubes and spaced therefrom.
Claim 9
Dependent Claim
22 words
A floor scrubbing machine according to claim 7 characterized by a lid on said tank and said baffle depends from said lid.
Claim 10
Dependent Claim
76 words
A floor scrubbing machine according to claim 1 characterized further by said squeegee having pivot arms pivotally connected to said supporting means through a rear axle of wheels for said machine and having portions extending beyond the pivots, and an over-center spring connecting at least one of said arm portions and said supporting means to urge said squeegee beyond an upper, retracted position when in that position or a lower, floor-engaging position when in that position.
Claim 11
Dependent Claim
30 words
A floor scrubbing machine according to claim 9 characterized further by a latch engageable with one of said pivot arms to aid in holding the squeegee in the retracted position.
Claim 12
Dependent Claim
92 words
A removable tank for a floor scrubbing machine including a lower bottom wall having an air tube extending upwardly therefrom, said tube communicating with a first opening in said bottom wall, first sealing means associated with said opening, said tank having an upper bottom wall spaced to one side of and above said lower bottom wall, said upper bottom wall having a second air tube extending upwardly therefrom, said second air tube communicating with a second opening formed in said upper bottom wall, and second sealing means associated with said second opening.
Claim 13
Dependent Claim
92 words
A removable tank for a floor scrubbing machine including a lower bottom wall having an air tube extending upwardly therefrom, said tube communicating with a first opening in said bottom wall, first sealing means associated with said opening, said tank having an upper bottom wall spaced to one side of and above said lower bottom wall, said upper bottom wall having a second air tube extending upwardly therefrom, said second air tube communicating with a second opening formed in said upper bottom wall, and second sealing means associated with said second opening.
Claim 14
Dependent Claim
30 words
A tank according to claim 11 wherein said first sealing means comprises a first sealing ring located around said first opening adjacent the lower surface of said lower bottom wall.
Claim 15
Dependent Claim
30 words
A tank according to claim 11 wherein said second sealing means comprises a second sealing ring located around said second opening adjacent the lower surface of said upper bottom wall.
Claim 16
Dependent Claim
20 words
A removable tank according to claim 11 characterized by both of said air tubes terminating at about the same level.
Claim 17
Dependent Claim
45 words
A removable tank according to claim 11 characterized further by a handle rod extending across said tank between two opposite walls thereof and below the upper edges of said tank, said handle rod also being in a vertical plane located between said two air tubes.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |