Patent US3864780A successfully refreshed from Google Patents.
US3864780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning brush with revolving bristles
Assignee: Individual
•
Filing: 1973-12-26
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Granted: 1975-02-11
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Expires: 1993-12-26
Abstract
Abstract A brush is disclosed which comprises a housing; a bristlebearing head rotatably mounted in said housing; driven means, preferably in the form of an impeller, connected to the head for rotating the head in response to fluid flow; motor means connected to the head for rotating the head, and fluid responsive control means for energizing the motor means as a function of fluid flow.
Inventors
- 👤 Jasper Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:15
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/02; A46B13/04; A46B13/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
54 words
A brush comprising a housing; a bristle-bearing head rotatably mounted in said housing; driven means connected to said head for rotating said head in response to fluid flow; motor means connected to said head for rotating said head; and fluid responsive control means for energizing said motor means as a function of fluid flow.
Claim 2
Dependent Claim
54 words
A brush comprising a housing; a bristle-bearing head rotatably mounted in said housing; driven means connected to said head for rotating said head in response to fluid flow; motor means connected to said head for rotating said head; and fluid responsive control means for energizing said motor means as a function of fluid flow.
Claim 3
Dependent Claim
17 words
The brush of claim 1 wherein said driven means comprises an impeller rotatably mounted in said housing.
Claim 4
Dependent Claim
18 words
The brush of claim 2 and further including an overriding clutch connecting said motor means to said impeller.
Claim 5
Dependent Claim
61 words
The brush of claim 3 wherein said fluid responsive control means comprises: movable means positioned in the flow path of said fluid for experiencing movement as a function of said fluid flow; and potentiometer means responsive to the motion of said movable means for increasing energization of said motor means in response to a decrease in fluid flow through sand conduit.
Claim 6
Dependent Claim
27 words
The brush of claim 4 wherein said movable means comprises a flexible diaphragm member biased to return to an initial condition in the absence of fluid flow.
Claim 7
Dependent Claim
31 words
The brush of claim 2 and further including a fluid carrying conduit communicating with said housing, whereby flow of fluid through said conduit and into said housing will rotate said impeller.
Claim 8
Dependent Claim
23 words
The brush of claim 6 wherein one wall of said housing rotatably carries said head; said one wall having fluid flow apertures therethrough.
Claim 9
Dependent Claim
19 words
The brush of claim 1 and further including an overriding clutch connecting said motor means to said driven means.
Claim 10
Dependent Claim
32 words
The brush of claim 1 and further including a fluid carrying conduit communicating with said housing; whereby flow of fluid through said conduit and into said housing will rotate said driven means.
Claim 11
Dependent Claim
62 words
The brush of claim 9 wherein said fluid responsive control means comprises: movable means positioned in said conduit, said movable means experiencing motion as a function of said fluid flow through said conduit; and potentiometer means responsive to the motion of said movable means for increasing energization of said motor means in response to a decrease in fluid flow through said conduit.
Claim 12
Dependent Claim
39 words
The brush of claim 10 wherein said movable means comprises a flexible diaphragm member secured to a side wall of said conduit and biased to return to an initial condition in the absence of fluid flow through said conduit.
Claim 13
Dependent Claim
61 words
The brush of claim 1 wherein said fluid responsive control means comprises: movable means positioned in the flow path of said fluid for experiencing movement as a function of said fluid flow; and potentiometer means responsive to the motion of said movable means for increasing energization of said motor means in response to a decrease in fluid flow through said conduit.
Claim 14
Dependent Claim
27 words
The brush of claim 12 wherein said movable means comprises a flexible diaphragm member biased to return to an initial condition in the absence of fluid flow.
References Cited (Backward Citations)
US2744271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |