US3271912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lens blocks
Assignee: American Optical Corp
•
Filing: 1965-03-01
•
Granted: 1966-09-13
•
Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Buckminster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:50
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
THE COMBINATION WITH A LENS BLANK, OF A LENS BLOCK FOR HOLDING THE BLANK IN A MACHINE DURING PROCESSING OF THE BLANK, (A) SAID BLOCK BEING A METALLIC ALLOY HAVING A LOWER MELTING POINT THAN SAID LENS BLANK AND HAVING ONE END FACE MOLDED ON SAID BLANK TO CONFORM IN SHARE TO AND DIRECTLY ADHERED TO ONE FACE OF SAID BLANK, (B) SAID BLOCK HAVING AN INTEGRAL RELATIVELY SHORT SHANK, THE MAXIMUM OVERALL AXIAL EXTENT OF THE BLOCK BEING APPROXIMATELY EQUAL TO THE MAXIMUM OVERALL AXIAL EXTENT OF THE BLANK, (C) SAID SHANK HAVING TWO RECESSES, WHICH EXTEND PARTWAY ONLY INTO SAID SHANK FOR RECEIVING DRIVING PINS OF THE MACHINE, SAID RECESSES EXTENDING TOWARD SAID ONE END FACE FROM THE END OF SAID SHANK OPPOSITE TO SAID ONE END FACE, AND (D) SAID SHANK HAVING THERETHROUGH A SEPARATE HOLE WHICH EXTENDS FROM SAID OPPOSITE END OF SAID SHANK CENTRALLY OF SAID SHANK THROUGH TO SAID ONE END FACE, THEREBY PERMITTING GAUGING OF THE THICKNESS OF THE LENS BLANK WHICH IS HELD BY SAID BLOCK.
Claim 2
Dependent Claim
174 words
THE COMBINATION WITH A LENS BLANK, OF A LENS BLOCK FOR HOLDING THE BLANK IN A MACHINE DURING PROCESSING OF THE BLANK, (A) SAID BLOCK BEING A METALLIC ALLOY HAVING A LOWER MELTING POINT THAN SAID LENS BLANK AND HAVING ONE END FACE MOLDED ON SAID BLANK TO CONFORM IN SHARE TO AND DIRECTLY ADHERED TO ONE FACE OF SAID BLANK, (B) SAID BLOCK HAVING AN INTEGRAL RELATIVELY SHORT SHANK, THE MAXIMUM OVERALL AXIAL EXTENT OF THE BLOCK BEING APPROXIMATELY EQUAL TO THE MAXIMUM OVERALL AXIAL EXTENT OF THE BLANK, (C) SAID SHANK HAVING TWO RECESSES, WHICH EXTEND PARTWAY ONLY INTO SAID SHANK FOR RECEIVING DRIVING PINS OF THE MACHINE, SAID RECESSES EXTENDING TOWARD SAID ONE END FACE FROM THE END OF SAID SHANK OPPOSITE TO SAID ONE END FACE, AND (D) SAID SHANK HAVING THERETHROUGH A SEPARATE HOLE WHICH EXTENDS FROM SAID OPPOSITE END OF SAID SHANK CENTRALLY OF SAID SHANK THROUGH TO SAID ONE END FACE, THEREBY PERMITTING GAUGING OF THE THICKNESS OF THE LENS BLANK WHICH IS HELD BY SAID BLOCK.
References Cited (Backward Citations)
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US2437436A
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Cited
US2603922A
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Cited
US3118198A
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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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |