US3235226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: Cooper Industries LLC
•
Filing: 1963-08-26
•
Granted: 1966-02-15
•
Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Allen Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:51
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/10; F16K27/107; F16K5/00; F16K5/06; F16K5/0647; F16K5/0663; F16K5/0673
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A RING FOR USE IN SEALING AT ONE END WITH A BALL VALVE MEMBER, COMPRISING A PLURALITY OF SPIRALLY WOUND, WRAPPINGS OF TAPE CONTAINING POLYTETRAFLUOROETHYLENE, SAID ONE END OF THE RING BEING SHAPED TO CONFORM APPROXIMATELY WITH SAID BALL VALVE MEMBER, AND THE WRAPPINGS AT SAID ONE END BEING UNCONSOLIDATED SO AS TO BE INDIVIDUALLY FLEXIBLE.
Claim 2
Dependent Claim
56 words
A RING FOR USE IN SEALING AT ONE END WITH A BALL VALVE MEMBER, COMPRISING A PLURALITY OF SPIRALLY WOUND, WRAPPINGS OF TAPE CONTAINING POLYTETRAFLUOROETHYLENE, SAID ONE END OF THE RING BEING SHAPED TO CONFORM APPROXIMATELY WITH SAID BALL VALVE MEMBER, AND THE WRAPPINGS AT SAID ONE END BEING UNCONSOLIDATED SO AS TO BE INDIVIDUALLY FLEXIBLE.
References Cited (Backward Citations)
US3002770A
Cited
US3118649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |