Patent US3671405A successfully refreshed from Google Patents.
US3671405A
Expired / Lapsed
US
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Method of electroforming on surfaces having projections
Assignee: ThyssenKrupp Budd Co
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Filing: 1970-12-07
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Granted: 1972-06-20
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Expires: 1990-12-07
Abstract
Abstract A method of electroforming on surfaces having relatively high projections by providing a shield of electrically non-conductive material to encircle a portion of the length of the projection and thereafter periodically raising the shield at a rate corresponding to the rate of deposition on the projections.
Inventors
- 👤 Michael Mattia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:44
CPC Classifications
C; C25; C25D; C25D1/00; Y; Y10; Y10S; Y10S204/00; Y10S204/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
In the method of coating a surface of an object having a projecting portion as set forth in claim 1 including the step of providing said closure plate with an aperture aligned with the axis of said projecting portion to enable escape of gas during electrodeposition on said projecting portion.
Claim 2
Dependent Claim
54 words
In the method of coating a surface of an object having a projecting portion as set forth in claim 2 including the step of providing arm means for supporting said cylindrical member, and the step of providing means to move said arm means and said cylindrical member along the axis of said cylindrical member.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |