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US3776645A Expired / Lapsed US ⏱️ 0.0 years remaining

Pressurized continuous flow liquid applicator with shut-off valve

Assignee: Individual
•
Filing: 1972-09-13
•
Granted: 1973-12-04
•
Expires: 1992-09-13
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Abstract

Abstract A system for the application of liquid to a surface, such as by painting, washing and waxing, in which the liquid source is maintained under a constant super-atmospheric pressure and a flexible cable is connected between the pressurized liquid source and the liquid applicator. A shut-off valve can selectively pinch-off the cable in order to cut off the liquid supply to the applicator. The liquid applicator can be fixed or movable to selected positions and may be in the form of a roller.

Inventors

  • 👤 H Walker

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 15:13
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/02; B05C17/0217; A; A46; A46B; A46B11/00; A46B11/06; A46B11/063; B05C17/002; B05C17/03; B05C17/0308; B05C17/0316; B05C21/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 180 words
A liquid applicator having intermittent or continuous flow comprising a hollow flexible handle defining an interior space, a flexible tube, a liquid source connected to said tube, a backing element at one end of said handle in communication with the interior space of said handle and having an applicator member secured thereto, said member being provided with a first valve through which communication with said space is established said valve being normally closed and opening only after a predetermined pressure is applied to said backing element to permit liquid in said space to penetrate through said valve to said applicator member, an additional valve in said handle through which communication between said tube and space is established, said valve operating in reverse to the operation of said first mentioned valve selectively and alternately to permit and prevent liquid entering said space, said handle being unsupported whereby during use it flexes to constitute means to draw liquid from said container through said additional valve and to push liquid drawn through said additional valve through said first valve to said applicator member.
Claim 2
Dependent Claim 180 words
A liquid applicator having intermittent or continuous flow comprising a hollow flexible handle defining an interior space, a flexible tube, a liquid source connected to said tube, a backing element at one end of said handle in communication with the interior space of said handle and having an applicator member secured thereto, said member being provided with a first valve through which communication with said space is established said valve being normally closed and opening only after a predetermined pressure is applied to said backing element to permit liquid in said space to penetrate through said valve to said applicator member, an additional valve in said handle through which communication between said tube and space is established, said valve operating in reverse to the operation of said first mentioned valve selectively and alternately to permit and prevent liquid entering said space, said handle being unsupported whereby during use it flexes to constitute means to draw liquid from said container through said additional valve and to push liquid drawn through said additional valve through said first valve to said applicator member.
Claim 3
Dependent Claim 17 words
A liquid applicator as claimed in claim 1 wherein said first valve is a one-way slit valve.

References Cited (Backward Citations)

US2960040A Cited
US3020579A Cited
US3226761A Cited
US3304573A Cited
US3319837A Cited
US3371980A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-03 1977-06-04 1977-12-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-03 1981-06-04 1981-12-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-03 1985-06-04 1985-12-04 $7700.00 Window Closed / Lapsed

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