US3937400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for spraying paint
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1974-11-07
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Granted: 1976-02-10
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Expires: 1994-11-07
Abstract
Abstract Apparatus for spraying a predetermined amount of paint, especially electroconductive paint as used for coating metal anodes, which comprises in combination an electrostatic spray gun and a paint delivery device for the gun which operates on a single displacement diaphragm principle.
Inventors
- 👤 Janusz Josef Henryk Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:10
CPC Classifications
B; B05; B05B; B05B5/00; B05B5/16; B05B5/1608
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
129 words
In a method of coating a metal anode with electroconductive paint with an electrostatic spray gun while maintaining said gun at a high electrical potential and said anode at ground potential, the improvement which comprises: providing a diaphragm assembly having a flexible diaphragm separating a paint pumping chamber containing sufficient paint to coat the entire surface of the electrode and a pressurizing chamber; connecting the pumping chamber to the spray gun; introducing non-compressible fluid into the pressurizing chamber at a uniform continuous non-pulsating rate so that the diaphragm flexes and delivers the paint in the pumping chamber to the spray gun at said uniform continuous non-pulsating rate; and spraying the delivered electroconductive paint from the spray gun onto the surface of the anode at said uniform continuous non-pulsating rate.
Claim 2
Dependent Claim
129 words
In a method of coating a metal anode with electroconductive paint with an electrostatic spray gun while maintaining said gun at a high electrical potential and said anode at ground potential, the improvement which comprises: providing a diaphragm assembly having a flexible diaphragm separating a paint pumping chamber containing sufficient paint to coat the entire surface of the electrode and a pressurizing chamber; connecting the pumping chamber to the spray gun; introducing non-compressible fluid into the pressurizing chamber at a uniform continuous non-pulsating rate so that the diaphragm flexes and delivers the paint in the pumping chamber to the spray gun at said uniform continuous non-pulsating rate; and spraying the delivered electroconductive paint from the spray gun onto the surface of the anode at said uniform continuous non-pulsating rate.
Claim 3
Dependent Claim
21 words
A method as in claim 1 wherein the paint is sprayed at a constant rate of between 1 and 10 ml/minute.
Claim 4
Dependent Claim
21 words
A method as in claim 1 wherein the paint is sprayed at a constant rate of between 1 and 5 ml/minute.
Claim 5
Dependent Claim
22 words
A method as in claim 1 wherein the paint comprises thermally decomposable compounds of a platinum metal and of a film-forming metal.
Claim 6
Dependent Claim
22 words
A method as in claim 1 wherein the paint comprises thermally decomposable compounds of a ruthenium compound and of a titanium compound.
Claim 7
Dependent Claim
18 words
A method as in claim 1 wherein the paint further comprises a non-conducting particulate or fibrous refractory material.
Claim 8
Dependent Claim
14 words
A method as in claim 6 wherein the refractory material comprises zirconium silicate particles.
Claim 9
Dependent Claim
20 words
A method as in claim 7 wherein the refractory material is a mixture of zirconium silicate particles and zirconia fibres.
References Cited (Backward Citations)
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Cited
US2513455A
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US2585172A
Cited
US2731297A
Cited
US2819928A
Cited
US2881959A
Cited
US3169882A
Cited
US3227314A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |