US3070846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold construction for casting thermosetting plastics of accurately controlled shape
Assignee: Bausch and Lomb Inc
•
Filing: 1960-06-20
•
Granted: 1963-01-01
•
Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 Schrier Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:42
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/0048; B29D11/00528; B29C; B29C31/00; B29C31/04; B29C31/041; B29C33/00; B29C33/0038; B29C33/0077; B29D11/00413; B29D11/00538; B29C45/00; Y; Y10; Y10S; Y10S425/00; Y10S425/023; Y10S425/808; Y10S425/812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A FILLER ARRANGEMENT FOR MOLDS OF THE TYPE USED IN THE MANUFACTURE OF OPTICAL ELEMENTS HAVING TWO RELATIVELY RIGID MOLD ELEMENTS DISPOSED IN SPACED RELATION RELATIVE TO EACH OTHER, SAID ARRANGEMENT COMPRISING A FLEXIBLE GASKET ADAPTED FOR POSITIONING INTERMEDIATE THE MOLD ELEMENTS AND CONTROLLING THE RELATIVE POSITION OF SAID MOLD ELEMENTS, SAID GASKET DEFINING A PASSAGEWAY EXTENDING THROUGH SAID GASKET AND OPENING WITHIN THE MOLD, AN INTEGRAL VALVE INTEGRAL WITH SAID GASKET ON THE INNER END OF SAID PASSAGEWAY SEALING SAID PASSAGEWAY AGAINST THE ESCAPE OF FLUID FROM WITHIN THE MOLD.
Claim 2
Dependent Claim
91 words
A FILLER ARRANGEMENT FOR MOLDS OF THE TYPE USED IN THE MANUFACTURE OF OPTICAL ELEMENTS HAVING TWO RELATIVELY RIGID MOLD ELEMENTS DISPOSED IN SPACED RELATION RELATIVE TO EACH OTHER, SAID ARRANGEMENT COMPRISING A FLEXIBLE GASKET ADAPTED FOR POSITIONING INTERMEDIATE THE MOLD ELEMENTS AND CONTROLLING THE RELATIVE POSITION OF SAID MOLD ELEMENTS, SAID GASKET DEFINING A PASSAGEWAY EXTENDING THROUGH SAID GASKET AND OPENING WITHIN THE MOLD, AN INTEGRAL VALVE INTEGRAL WITH SAID GASKET ON THE INNER END OF SAID PASSAGEWAY SEALING SAID PASSAGEWAY AGAINST THE ESCAPE OF FLUID FROM WITHIN THE MOLD.
References Cited (Backward Citations)
GB190318448A
Cited
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Cited
GB490381A
Cited
US2406361A
Cited
GB615985A
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Cited
US2838798A
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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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |