Patent US3788554A successfully refreshed from Google Patents.
US3788554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid spraying apparatus
Assignee: Binks Sames UK Ltd
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Filing: 1972-08-04
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Granted: 1974-01-29
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Expires: 1992-08-04
Abstract
Abstract Liquid spraying apparatus especially, but not exclusively for use in paint spraying operations, the apparatus comprising a conduit which has at one end a piston reciprocable by poweroperated means and which is connected at its other end to a diaphragm pump, said pump being actuable by pressure applied to a column of liquid in said conduit by said piston, the diaphragm having a liquid inlet which is disposed adjacent to the pump and having an outlet which is connected to one end of a further conduit adapted at its other end to be connected to a spray gun.
Inventors
- 👤 F Guise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:55
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/0403; B05B9/0409; B05B9/08; B05B9/085; B05B9/0855; B05B9/0861
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
189 words
Liquid spraying apparatus comprising a conduit having at one end a piston reciprocable by power-operated means and at the other end a diaphragm pump whereby in use pressure applied to a column of liquid in said conduit by said piston will be transmitted to said diaphragm pump for actuation thereof, said diaphragm pump having a liquid inlet which is disposed adjacent to the pump and being connected to one end of a further conduit adapted at its other end to be connected to a spray gun, said diaphragm pump being provided with a spring-loaded inlet valve having a seat, said inlet valve being positioned when in its rest condition so that a clearance is formed between it and said seat, and having a stem which extends with clearance through a bore formed in an inlet valve housing to permit slight misalignment of said stem relative to the axis of said bore, the arrangement being such that when the diaphragm pump is immersed in a container containing liquid to be sprayed, actuation of said pump will result in delivery of such liquid to the spray gun via said further conduit.
Claim 2
Dependent Claim
189 words
Liquid spraying apparatus comprising a conduit having at one end a piston reciprocable by power-operated means and at the other end a diaphragm pump whereby in use pressure applied to a column of liquid in said conduit by said piston will be transmitted to said diaphragm pump for actuation thereof, said diaphragm pump having a liquid inlet which is disposed adjacent to the pump and being connected to one end of a further conduit adapted at its other end to be connected to a spray gun, said diaphragm pump being provided with a spring-loaded inlet valve having a seat, said inlet valve being positioned when in its rest condition so that a clearance is formed between it and said seat, and having a stem which extends with clearance through a bore formed in an inlet valve housing to permit slight misalignment of said stem relative to the axis of said bore, the arrangement being such that when the diaphragm pump is immersed in a container containing liquid to be sprayed, actuation of said pump will result in delivery of such liquid to the spray gun via said further conduit.
Claim 3
Dependent Claim
81 words
Liquid spraying apparatus as claimed in claim 1 in combination with a liquid container wherein there is provided a platform which engages the upper end of said container and wherein said power-operated means comprises an electric motor which is disposed above said platform, said first-mentioned conduit extending below said platform into the container, the length of the first-mentioned conduit relative to the depth of the container being such that said diaphragm pump is disposed adjacent to the bottom of the container.
Claim 4
Dependent Claim
39 words
Liquid spraying apparatus as claimed in claim 1 wherein the upper end of said first-mentioned conduit is provided with a spring-loaded relief valve arranged to relieve fluid pressure in said first-mentioned conduit when such pressure exceeds a pre-determined value.
Claim 5
Dependent Claim
39 words
Liquid spraying apparatus as claimed in claim 2 wherein the upper end of said first-mentioned conduit is provided with a spring-loaded relief valve arranged to relieve fluid pressure in said first-mentioned conduit when such pressure exceeds a pre-determined value.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |