US3039950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for electro-chemically removing metal
Assignee: North American Aviation Corp
•
Filing: 1959-05-15
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Granted: 1962-06-19
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Expires: 1979-05-15
Abstract
No abstract record available.
Inventors
- 👤 Paul A Oelgoetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:48
CPC Classifications
B; B23; B23H; B23H3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
APPARATUS FOR UNIFORMLY REMOVING METAL FROM A CONTOURED WORKPIECE AND IMMERSED IN AN ACID ELETROLYTE, COMPRISING: ANODE FRAME MEANS, FASTERNER MEANS FIXEDLY AND ELECTRICALLY CONNECTING SAID WORKPIECE TO SAID FRAME MEANS, CATHODE OVERLAY MEANS HAVING A CONTOURED PORTION WHICH ENVELOPES SAID WORKPIECE AND WHICH IS PROVIDED WITH A CONTOUR THAT CORREPSONDS SUBSTANTIALLY TO THE COMPLETE CONTOUR OF SAID WORKPIECE, AND SECOND FASTENER MEANS FIXEDLY CONNECTING SAID OVERLAY MEANS TO SAID FRAME MEANS IN ELECTRICALLY INSULATED RELATION, SAID OVERLAY MEANS CONTOURED PORTION BEING SPACED-APART FROM CORRESPONDING EXTERIOR SURFACE AREA OF SAID WORKPIECE TO A UNIFORM DISTANCE WHEREBY METAL IS UNIFORMLY
Claim 2
Dependent Claim
99 words
APPARATUS FOR UNIFORMLY REMOVING METAL FROM A CONTOURED WORKPIECE AND IMMERSED IN AN ACID ELETROLYTE, COMPRISING: ANODE FRAME MEANS, FASTERNER MEANS FIXEDLY AND ELECTRICALLY CONNECTING SAID WORKPIECE TO SAID FRAME MEANS, CATHODE OVERLAY MEANS HAVING A CONTOURED PORTION WHICH ENVELOPES SAID WORKPIECE AND WHICH IS PROVIDED WITH A CONTOUR THAT CORREPSONDS SUBSTANTIALLY TO THE COMPLETE CONTOUR OF SAID WORKPIECE, AND SECOND FASTENER MEANS FIXEDLY CONNECTING SAID OVERLAY MEANS TO SAID FRAME MEANS IN ELECTRICALLY INSULATED RELATION, SAID OVERLAY MEANS CONTOURED PORTION BEING SPACED-APART FROM CORRESPONDING EXTERIOR SURFACE AREA OF SAID WORKPIECE TO A UNIFORM DISTANCE WHEREBY METAL IS UNIFORMLY
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |