Patent US3117573A successfully refreshed from Google Patents.
US3117573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm
Assignee: Individual
•
Filing: 1961-12-01
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Granted: 1964-01-14
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Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Walter A Snell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:41
CPC Classifications
A; A61; A61F; A61F6/00; A61F6/06; A61F6/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A VAGINAL DIAPHRAGM COMPRISING A COMPOSITE SPRING ASSEMBLY INCLUDING AN INNER HELICAL SPRING OF LARGE RADIUS AND GREATER THAN ONE FULL CONVOLUTION INL LENGTH ENTIRELY ENCLOSED BY AN OUTER ANNULAR SPRING OF RELATIVELY SMALL RADIUS, SAID INNER SPRING BEING FORMED OF THIN STRIP STOCK WOUND ON EDGE WITH THE WIDTH THEREOF LYING SUBSTANTILLY IN A COMMON PLANE AND FITTING LOOSELY WITHIN THE HOLLOW CORE OF SAID OUTER SPRING, AND A CUP SHAPED THIN-WALLED RUBBER DIAPHRAGM FORMED WITH A THIN-WALLED TUBULAR RIM SURROUNDING AND SUPPORTED BY THE EXTERIOR OF SAID OUTER SPRING LEAVING A HOLLOW ANNULAR CAVITY ENCLOSING SAID COMPOSITE SPRING ASSEMBLY.
Claim 2
Dependent Claim
101 words
A VAGINAL DIAPHRAGM COMPRISING A COMPOSITE SPRING ASSEMBLY INCLUDING AN INNER HELICAL SPRING OF LARGE RADIUS AND GREATER THAN ONE FULL CONVOLUTION INL LENGTH ENTIRELY ENCLOSED BY AN OUTER ANNULAR SPRING OF RELATIVELY SMALL RADIUS, SAID INNER SPRING BEING FORMED OF THIN STRIP STOCK WOUND ON EDGE WITH THE WIDTH THEREOF LYING SUBSTANTILLY IN A COMMON PLANE AND FITTING LOOSELY WITHIN THE HOLLOW CORE OF SAID OUTER SPRING, AND A CUP SHAPED THIN-WALLED RUBBER DIAPHRAGM FORMED WITH A THIN-WALLED TUBULAR RIM SURROUNDING AND SUPPORTED BY THE EXTERIOR OF SAID OUTER SPRING LEAVING A HOLLOW ANNULAR CAVITY ENCLOSING SAID COMPOSITE SPRING ASSEMBLY.
References Cited (Backward Citations)
US2538478A
Cited
US3042029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |