US3224953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic lathe
Assignee: Microdot Inc
•
Filing: 1961-04-07
•
Granted: 1965-12-21
•
Expires: 1981-04-07
Abstract
No abstract record available.
Inventors
- 👤 John D Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:21
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
AN ELECTROLYTIC LATHE COMPRISING WORK HOLDING MEANS ADAPTED TO ROTABLY SUPPORT A WORK PIECE, RESERVOIR MEANS ADAPTED TO CONTAIN A SUPPLY OF ELECTROLYTE, AN INCLINED SPREADER PLATE MEANS HAVING AN OPENING THEREIN FOR PASSAGE OF SSAID WORK PIECE AND CAPABLE OF CAUSING SAID ELECTROLYTE TO FLOW IN A SHEET OVER SAID WORK PIECE AS SAID WORK PIECE IS BEING ROTATED, SAID SPREADER PLATE MEANS BEING DESIGNED AND INSTALLED TO PROVIDE A SHEET OF ELECTROLYTE OVER SAID OPENING HAVING A THICKNESS LESS THAN THE LENGTH OF THE PORTION OF THE ARTICLE BEING TREATED, RECIPROCATORY MEANS TO PRODUCE RELATIVE MOTION BETWEEN SAID WORK PIECE AND SAID SPREADER PLATE MEANS SO THAT SAID ELECTROLYTE CONTACTS SAID WORK PIECE AT SUCCESSIVE PORTIONS, AND ELECTRICAL MEANS ADAPTED TO CAUSE CURRENT TO FLOW THROUGH SAID ELECTROLYTE AND SAID WORK PIECE.
Claim 2
Dependent Claim
134 words
AN ELECTROLYTIC LATHE COMPRISING WORK HOLDING MEANS ADAPTED TO ROTABLY SUPPORT A WORK PIECE, RESERVOIR MEANS ADAPTED TO CONTAIN A SUPPLY OF ELECTROLYTE, AN INCLINED SPREADER PLATE MEANS HAVING AN OPENING THEREIN FOR PASSAGE OF SSAID WORK PIECE AND CAPABLE OF CAUSING SAID ELECTROLYTE TO FLOW IN A SHEET OVER SAID WORK PIECE AS SAID WORK PIECE IS BEING ROTATED, SAID SPREADER PLATE MEANS BEING DESIGNED AND INSTALLED TO PROVIDE A SHEET OF ELECTROLYTE OVER SAID OPENING HAVING A THICKNESS LESS THAN THE LENGTH OF THE PORTION OF THE ARTICLE BEING TREATED, RECIPROCATORY MEANS TO PRODUCE RELATIVE MOTION BETWEEN SAID WORK PIECE AND SAID SPREADER PLATE MEANS SO THAT SAID ELECTROLYTE CONTACTS SAID WORK PIECE AT SUCCESSIVE PORTIONS, AND ELECTRICAL MEANS ADAPTED TO CAUSE CURRENT TO FLOW THROUGH SAID ELECTROLYTE AND SAID WORK PIECE.
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |