US3136000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for producing lenses and lens blanks from polymerizable materials
Assignee: American Optical Corp
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Filing: 1962-10-18
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Granted: 1964-06-09
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Expires: 1982-10-18
Abstract
No abstract record available.
Inventors
- 👤 Chester M Slyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:41
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/0048; B29D11/00528; B29C; B29C33/00; B29C33/0038; B29D11/00413; B29D11/00538; B29L; B29L2031/00; B29L2031/76; B29L2031/7602; Y; Y10; Y10S; Y10S425/00; Y10S425/808; Y10S425/812
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
154 words
IN MOLDING DEVICE FOR FORMING A PLASTIC OPTICAL ELEMENT COMPRISING ONE MOLD HALF HAVING AN OPTICALLY CURVED CONVEX SURFACE ADAPTED TO MOLD THE CONCAVE SURFACE OF THE ELEMENT AND A SECOND MOLD HALF HAVING AN OPTICALLY CURVED ONCAVE SURFACE ADAPTED TO MOLD THE CONVEX SURFACE OF SAID ELEMENT, THE IMPROVEMENT WHICH COMPRISES A GASKET HAVING AN ANNULAR PORTION POSITIONED IN ENCIRCLING RELATION WITH THE PERIPHERY OF SAID MOLD HALVES TO HOLD SAID MOLD HALVES IN ASSEMBLED RELATION AND HAVING AN INTERNAL LIP FITTING BETWEEN AND ENGAGING THE RESPECTIVE CONCAVE AND CONVEX SURFACES OF SAID MOLD HALVES, THE PORTION OF THE LIP ENGAGING THE MOLD HALF HAVING THE CONCAVE SURFACE BEING SO ANGLED AS TO HAVE EFFECTIVE LINE CONTACT WITH SAID SURFACE AND THE PORTION OF THE LIP ENGAGING THE CONVEX SURFACE BEING SO SHAPED AS TO HAVE EFFECTIVE LINE CONTACT WITH SAID SURFACE AND MEANS FOR CLAMPING SAID MOLD HALVES WITHIN SAID ANNULAR PORTION.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |