US3997418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophoretic coating
Assignee: Alcoa Corp
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Filing: 1972-11-09
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Granted: 1976-12-14
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Expires: 1992-11-09
Abstract
Abstract Electrophoretic coating of small ware such as metal fasteners or rivets.
Inventors
- 👤 Kenneth E. Buse
- 👤 Raymond J. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:22
CPC Classifications
C; C25; C25D; C25D13/00; C25D13/22; C25D13/12; Y; Y10; Y10S; Y10S204/00; Y10S204/07
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A process for electrophoretic coating which comprises conducting electrically charged round head metal fasteners beneath at least one oppositely charged nozzle having a part circular shaped discharge portion and passing a current between said nozzle and said fasteners while flowing a coating medium from said discharge portion of said nozzle onto said surface of said fasteners to be coated, thereby coating the same substantially uniformly with said coating medium.
Claim 2
Dependent Claim
69 words
A process for electrophoretic coating which comprises conducting electrically charged round head metal fasteners beneath at least one oppositely charged nozzle having a part circular shaped discharge portion and passing a current between said nozzle and said fasteners while flowing a coating medium from said discharge portion of said nozzle onto said surface of said fasteners to be coated, thereby coating the same substantially uniformly with said coating medium.
Claim 3
Dependent Claim
75 words
In a process for electrophoretic coating of metal fasteners which comprises coating same with a flow of a coating substance by conducting said coating substance from an electrically charged nozzle to oppositely charged surfaces of the heads of said fasteners, the improvement which comprises employing a semicircular-shaped surface on said nozzle, thereby directing said flow substantially evenly over said surfaces of said heads of said fasteners and producing a coating thereon of substantially uniform thickness.
Claim 4
Dependent Claim
75 words
In a process for electrophoretic coating of metal fasteners which comprises coating same with a flow of a coating substance by conducting said coating substance from an electrically charged nozzle to oppositely charged surfaces of the heads of said fasteners, the improvement which comprises employing a semicircular-shaped surface on said nozzle, thereby directing said flow substantially evenly over said surfaces of said heads of said fasteners and producing a coating thereon of substantially uniform thickness.
Claim 5
Dependent Claim
24 words
The improvement of claim 2 wherein the metal fasteners are aluminum rivets and the coating substance comprises an aqueous dispersion of a coating polymer.
Claim 6
Dependent Claim
69 words
A process for uniform electrophoretic spray coating which comprises: passing a current between a surface of a part circular shaped object and an electrode comprising a nozzle having a portion contoured to the shape of at least a portion of the surface of said object while flowing a coating medium from said contoured electrode onto said surface of said shaped object, thereby providing a uniform coating on said object.
Claim 7
Dependent Claim
69 words
A process for uniform electrophoretic spray coating which comprises: passing a current between a surface of a part circular shaped object and an electrode comprising a nozzle having a portion contoured to the shape of at least a portion of the surface of said object while flowing a coating medium from said contoured electrode onto said surface of said shaped object, thereby providing a uniform coating on said object.
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) | 1979-12-14 | 1980-06-14 | 1980-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-14 | 1984-06-14 | 1984-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-14 | 1988-06-14 | 1988-12-14 | $7700.00 | Window Closed / Lapsed |