Patent US3144541A successfully refreshed from Google Patents.
US3144541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical stock removal apparatus
Assignee: Motors Liquidation Co
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Filing: 1961-07-13
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Granted: 1964-08-11
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 David H Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:28
CPC Classifications
B; B23; B23H; B23H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
AN IONIZABLE FLUID FLOW SYSTEM FOR ELECTRICAL STOCK REMOVAL APPARATUS OF THE CHARACTER ADAPTED TO CAUSE STOCK TO BE MACHINED FROM A WORKPIECE ELECTRODE BY ELECTRICAL DISCHARGES GENERATED ACROSS A GAP FORMED BETWEEN A CUTTING TOOL ELECTRODE AND THE WORKPIECE ELECTRODE COMPRISING A SOURCE OF CLEAN IONIZABLE FLUID, AND MEANS PRODUCING A FLUID PRESSURE DIFFERENTIAL ACROSS THE GAP SO AS TO PROMOTE FLOW OF THE CLEAN IONIZABLE FLUID FROM THE SOURCE THROUGH THE GAP IN THE DIRECTION STOCK IS BEING MACHINED AND OF A CHARACTER THAT REDUCES THE HAZARD OF EXPLOSIONS FROM GAS POCKET FORMATIONS IN THE FLUID, THE PRESSURE DIFFERENTIAL PRODUCING MEANS INCLUDING AN ENCLOSURE ADJACENT THE GAP AND COMMUNICATING WITH THE SOURCE.
Claim 2
Dependent Claim
114 words
AN IONIZABLE FLUID FLOW SYSTEM FOR ELECTRICAL STOCK REMOVAL APPARATUS OF THE CHARACTER ADAPTED TO CAUSE STOCK TO BE MACHINED FROM A WORKPIECE ELECTRODE BY ELECTRICAL DISCHARGES GENERATED ACROSS A GAP FORMED BETWEEN A CUTTING TOOL ELECTRODE AND THE WORKPIECE ELECTRODE COMPRISING A SOURCE OF CLEAN IONIZABLE FLUID, AND MEANS PRODUCING A FLUID PRESSURE DIFFERENTIAL ACROSS THE GAP SO AS TO PROMOTE FLOW OF THE CLEAN IONIZABLE FLUID FROM THE SOURCE THROUGH THE GAP IN THE DIRECTION STOCK IS BEING MACHINED AND OF A CHARACTER THAT REDUCES THE HAZARD OF EXPLOSIONS FROM GAS POCKET FORMATIONS IN THE FLUID, THE PRESSURE DIFFERENTIAL PRODUCING MEANS INCLUDING AN ENCLOSURE ADJACENT THE GAP AND COMMUNICATING WITH THE SOURCE.
References Cited (Backward Citations)
US2818490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |