US3330754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical trepanning apparatus
Assignee: Ex-Cell-O Corp
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Filing: 1966-07-06
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Granted: 1967-07-11
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Expires: 1986-07-06
Abstract
No abstract record available.
Inventors
- 👤 Kempes F Trager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:24
CPC Classifications
B; B23; B23H; B23H9/00; B23H9/14; B23H9/16; B21; B21D; B21D28/00; B21D28/02; B21D28/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN AN ELECTROCHEMICAL TREPANNING APPARATUS COMPRISING: (A) A HOLLOW ELECTRODE TOOL HAVING AT LEAST ONE ELECTROLYTE PASSAGE THERETHROUGH FOR SUPPLYING ELECTROLYTE FLUID UNDER PRESSURE AND ADAPTED TO BE MOVABLE RELATIVE TO A WORKPIECE IN A MANNER AS TO DEFINE A GAP BETWEEN A WORKING FACE OF SAID ELECTRODE TOOL AND SAID WORKPIECE; (B) A BACK-UP MEMBER FOR SUPPORTING SAID WORKPIECE AND HAVING A RECESSED AREA THEREON SUBSTANTIALLY CONFORMING TO THE SHAPE OF SAID ELECTRODE TOOL WORKING FACE, SAID RECESSED AREA ADAPTED TO BE IN CONTACT WITH AT LEAST A PORTION OF SAID WORKPIECE CUT AWAY BY SAID ELECTRODE TOOL; AND (C) MEANS FOR HOLDING SAID PORTION OF SAID WORKPIECE CUT AWAY BY SAID ELECTRODE TOOL WHEN SAID ELECTRODE TOOL WORKING FACE HAS PENETRATED THROUGH SAID WORKPIECE AND EMERGES THEREFROM INTO SAID RECESSED AREA OF SAID BACK-UP MEMBER, THE IMPROVEMENT WHEREIN (D) SAID BACK-UP MEMBER INCLUDES MEANS FOR SUPPLYING SAID RECESSED AREA WITH ELECTROLYTE FLUID UNDER PRESSURE; AND WHEREIN
Claim 2
Dependent Claim
158 words
IN AN ELECTROCHEMICAL TREPANNING APPARATUS COMPRISING: (A) A HOLLOW ELECTRODE TOOL HAVING AT LEAST ONE ELECTROLYTE PASSAGE THERETHROUGH FOR SUPPLYING ELECTROLYTE FLUID UNDER PRESSURE AND ADAPTED TO BE MOVABLE RELATIVE TO A WORKPIECE IN A MANNER AS TO DEFINE A GAP BETWEEN A WORKING FACE OF SAID ELECTRODE TOOL AND SAID WORKPIECE; (B) A BACK-UP MEMBER FOR SUPPORTING SAID WORKPIECE AND HAVING A RECESSED AREA THEREON SUBSTANTIALLY CONFORMING TO THE SHAPE OF SAID ELECTRODE TOOL WORKING FACE, SAID RECESSED AREA ADAPTED TO BE IN CONTACT WITH AT LEAST A PORTION OF SAID WORKPIECE CUT AWAY BY SAID ELECTRODE TOOL; AND (C) MEANS FOR HOLDING SAID PORTION OF SAID WORKPIECE CUT AWAY BY SAID ELECTRODE TOOL WHEN SAID ELECTRODE TOOL WORKING FACE HAS PENETRATED THROUGH SAID WORKPIECE AND EMERGES THEREFROM INTO SAID RECESSED AREA OF SAID BACK-UP MEMBER, THE IMPROVEMENT WHEREIN (D) SAID BACK-UP MEMBER INCLUDES MEANS FOR SUPPLYING SAID RECESSED AREA WITH ELECTROLYTE FLUID UNDER PRESSURE; AND WHEREIN
References Cited (Backward Citations)
US3058895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |