US2805197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of electrolytic grinding and eroding
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1955-11-07
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Granted: 1957-09-03
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Expires: 1975-11-07
Abstract
No abstract record available.
Inventors
- 👤 Newman W Thibault
- 👤 George E Comstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:42
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/06; B23H5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD FOR ERODING STOCK FROM A WORKPIECE WHICH COMPRISES CONTACTING A WORKPIECE WITH THE SHAPED FACE OF A MOLDED BODY OF CARBIDE SELECTED FROM THE GROUP CONSISTING OF SELF-BONDED BORON CARBIDE, RECRYSTALLIZED SILICON CARBIDE AND MIXTURES THEREOF, MOVING THE WORKPIECE RELATIVE TO SAID SURFACE WHILE MAINTAINING CONTACT THEREBETWEEN APPLYING AN ELECTROLYIC LIQUID TO SAID SURFACE, AND FLOWING A DIRECT ELECTRIC CURRENT ACROSS THE INTERFACE BETWEEN SAID WORKPIECE AND SAID SURFACE THROUGH THE ELECTROLYTIC LIQUID WITH SAID WORKPIECE AS AN ANODE AND SAID SURFACE AS A CATHODE.
Claim 2
Independent Claim
87 words
A METHOD FOR ERODING STOCK FROM A WORKPIECE WHICH COMPRISES CONTACTING A WORKPIECE WITH THE SHAPED FACE OF A MOLDED BODY OF CARBIDE SELECTED FROM THE GROUP CONSISTING OF SELF-BONDED BORON CARBIDE, RECRYSTALLIZED SILICON CARBIDE AND MIXTURES THEREOF, MOVING THE WORKPIECE RELATIVE TO SAID SURFACE WHILE MAINTAINING CONTACT THEREBETWEEN APPLYING AN ELECTROLYIC LIQUID TO SAID SURFACE, AND FLOWING A DIRECT ELECTRIC CURRENT ACROSS THE INTERFACE BETWEEN SAID WORKPIECE AND SAID SURFACE THROUGH THE ELECTROLYTIC LIQUID WITH SAID WORKPIECE AS AN ANODE AND SAID SURFACE AS A CATHODE.
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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) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |