Patent US3114992A successfully refreshed from Google Patents.
US3114992A
Expired / Lapsed
US
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Method for making lens blockers
Assignee: Lionel Corp
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Filing: 1960-12-07
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Granted: 1963-12-24
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Expires: 1980-12-07
Abstract
No abstract record available.
Inventors
- 👤 Patrick H Reardon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:22
CPC Classifications
B; B24; B24B; B24B13/00; B24B13/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF PREPARING LENS BLANKS FOR GRINDING THAT COMPRISES ARRANGING A PLURALITY OF SAID BLANKS EACH WITH ITS FACE TO BE GROUND DISPOSED CHORDWISE TO A COMMON CONCAVE HEMISPHERE, COVERING SAID BLANKS WITH BLOCKING PITCH TO A LEVEL OF THE DIAMETER OF SAID HEMISPHERE WHILE THEY ARE SO ARRANGED, ALLOWING THE RESULTING BODY TO HARDEN AND THEREAFTER BONDING THE SAME ALONG ITS DIAMETER TO ANOTHER LIKE BODY WHEREBY TO PRODUCE A BLOCKER BALL THE PITCH SURFACES OF WHICH CONFORM TO THE SURFACE OF A SPHERE AND THE GLASS SURFACES OF WHICH LIE IN
Claim 2
Independent Claim
94 words
THE METHOD OF PREPARING LENS BLANKS FOR GRINDING THAT COMPRISES ARRANGING A PLURALITY OF SAID BLANKS EACH WITH ITS FACE TO BE GROUND DISPOSED CHORDWISE TO A COMMON CONCAVE HEMISPHERE, COVERING SAID BLANKS WITH BLOCKING PITCH TO A LEVEL OF THE DIAMETER OF SAID HEMISPHERE WHILE THEY ARE SO ARRANGED, ALLOWING THE RESULTING BODY TO HARDEN AND THEREAFTER BONDING THE SAME ALONG ITS DIAMETER TO ANOTHER LIKE BODY WHEREBY TO PRODUCE A BLOCKER BALL THE PITCH SURFACES OF WHICH CONFORM TO THE SURFACE OF A SPHERE AND THE GLASS SURFACES OF WHICH LIE IN
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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) | 1966-12-23 | 1967-06-24 | 1967-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-23 | 1971-06-24 | 1971-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-23 | 1975-06-24 | 1975-12-24 | $7700.00 | Window Closed / Lapsed |