US3278192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing devices
Assignee: Otis Engineering Corp
•
Filing: 1962-10-08
•
Granted: 1966-10-11
•
Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Jack W Tamplen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:22
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/1208; E21B33/126; E21B33/128; Y; Y10; Y10S; Y10S277/00; Y10S277/926; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
135 words
A SEALING ELEMENT COMPRISING: AN ELONGATE ANNULAR RESILIENT SEALING MEMBER HAVING A SUBSTANTIALLY CYLINDRICAL EXTERIOR SURFACE AND HAVING A BORE EXTENDING AXIALLY THERETHROUGH, SAID MEMBER HAVING A PORT FORMED INTERMEDIATE THE ENDS OF SAID EXTERIOR SURFACE AND COMMUNICATING THE EXTERIOR SURFACE OF SAID SEALING ELEMENT WITH THE INTERIOR OF SAID SEALING ELEMENT, REINFORCING MEANS AT EACH END OF THE EXTERIOR OF SAID ANNULAR SEALING MEMBER, AND OPPOSITE LONGITUDINALLY OUTWARDLY FACING INCLINED ABUTMENT SURFACES ON THE OPPOSITE ENDS OF SAID RESILIENT MEMBER EXTENDING FROM THE CYLINDRICAL EXTERIOR SURFACE THEREOF TO THE BORE THEREOF AND PROVIDING MEANS FOR APPLICATION OF LONGITUDINAL COMPRESSIVE FORCE TO OPPOSITE ENDS OF SAID RESILIENT MEMBER FOR DEFORMING THE CENTRAL PORTION OF SAID RESILIENT MEMBER OUTWARDLY TO EXPANDABLE EXPANDED RESILIENT SEALING ENGAGEMENT WITH A FLOW CONDUCTOR ON OPPOSITE LONGITUDINAL SIDES OF SAID PORT.
References Cited (Backward Citations)
US321488A
Cited
US1984806A
Cited
US2196668A
Cited
US2325556A
Cited
US2988148A
Cited
US3036639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |