US3089292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lapping machine
Assignee: Saint Gobain Abrasives Inc
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Filing: 1961-04-14
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Granted: 1963-05-14
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Expires: 1981-04-14
Abstract
No abstract record available.
Inventors
- 👤 Grover C Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:13
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
LAPPING APPARATUS COMPRISING A RELATIVELY FIXED BASE, FIRST AND SECOND LAP ASSEMBLIES, FIRST AND SECOND WORK CARRIER DRIVING ELEMENTS, EACH LAP ASSEMBLY AND EACH DRIVING ELEMENT INCLUDING ONE OF FOUR GENERALLY CYLINDRICAL DEPENDING PORTIONS ALL ROTATABLY SUPPORTED UPON SAID BASE FOR INDEPENDENT ROTATION ABOUT A COMMON VERTICAL AXIS, AND A SINGLE DRIVE MEANS OPERATIVELY CONNECTED SEPARATELY TO EACH OF SAID DEPENDING PORTIONS SO AS TO PRODUCE ROTATION OF EACH OF SAID LAP ASSEMBLIES AND EACH OF SAID DRIVING ELEMENTS IN A PREDETERMINED DIRECTION AT A PREDETERMINED RATE, SO THAT A PLURALITY OF CIRCULAR WORK PIECE CARRIER MEANS INTERPOSED BETWEEN SAID FIRST AND SAID SECOND LAP ASSEMBLIES AND IN OPERATIVE ENGAGEMENT WITH SAID FIRST AND SAID SECOND DRIVING ELEMENTS ARE ROTATED CONCURRENTLY ABOUT THEIR RESPECTIVE AXES AND ABOUT THE COMMON VERTICAL AXIS.
Claim 2
Dependent Claim
131 words
LAPPING APPARATUS COMPRISING A RELATIVELY FIXED BASE, FIRST AND SECOND LAP ASSEMBLIES, FIRST AND SECOND WORK CARRIER DRIVING ELEMENTS, EACH LAP ASSEMBLY AND EACH DRIVING ELEMENT INCLUDING ONE OF FOUR GENERALLY CYLINDRICAL DEPENDING PORTIONS ALL ROTATABLY SUPPORTED UPON SAID BASE FOR INDEPENDENT ROTATION ABOUT A COMMON VERTICAL AXIS, AND A SINGLE DRIVE MEANS OPERATIVELY CONNECTED SEPARATELY TO EACH OF SAID DEPENDING PORTIONS SO AS TO PRODUCE ROTATION OF EACH OF SAID LAP ASSEMBLIES AND EACH OF SAID DRIVING ELEMENTS IN A PREDETERMINED DIRECTION AT A PREDETERMINED RATE, SO THAT A PLURALITY OF CIRCULAR WORK PIECE CARRIER MEANS INTERPOSED BETWEEN SAID FIRST AND SAID SECOND LAP ASSEMBLIES AND IN OPERATIVE ENGAGEMENT WITH SAID FIRST AND SAID SECOND DRIVING ELEMENTS ARE ROTATED CONCURRENTLY ABOUT THEIR RESPECTIVE AXES AND ABOUT THE COMMON VERTICAL AXIS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |