US3215208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing devices
Assignee: Otis Engineering Corp
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Filing: 1961-06-08
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Granted: 1965-11-02
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Expires: 1981-06-08
Abstract
No abstract record available.
Inventors
- 👤 Jack W Tamplen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:20
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/128; E21B33/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A SEALING DEVICE COMPRISING: A MANDREL TUBULAR ELASTIC EXPANSIBLE SEAL MEANS ON SAID MANDRE; MEANS ON SAID MANDREL MOVABLE LONGITUDINALLY WITH RESPECT TO SAID SEAL MEANS TO ENGAGE OPPOSITE ENDS OF SAID SEAL MEANS FOR COMPRESSING SAID SEAL MEANS IN A LONGITUDINAL DIRECTION OF SAID MANDREL AND EXPANDING SAID SEAL MEANS IN A TRANSVERSE DIRECTION OF SAID MANDREL; MEANS ON SAID MANDREL LIMITING MOVEMENT OF SAID COMPRESSING MEANS WITH RESPECT TO SAID SEAL MEANS FOR LIMITING THE COMPRESSION OF SAID SEAL MEANS BY SAID COMPRESSING AND EXPANDING MEANS; MEANS ON SAID MANDREL AND SAID COMPRESSING MEANS COENGAGEABLE WHEN IN A PREDETERMINED POSITION WITH RESPECT TO SAID MANDREL FOR LOCKING SAID COMPRESSING AND EXPANDING MEANS IN COMPRESSION AND EXPANDING POSITION, SAID LOCKING MEANS BEING MOVABLE TO A SECOND PREDETERMINED POSITION WITH RESPECT TO SAID MANDREL FOR DISENGAGEMENT FROM LOCKING POSITION TO RELEASE FROM SAID COMPRESSION AND EXPANDING MEANS TO MOVEMENT FROM SAID COMPRESSING AND EXPANDING POSITION TO PERMIT SAID SEAL MEANS TO RETURN TO UNEXPANDED POSITION.
Claim 2
Dependent Claim
165 words
A SEALING DEVICE COMPRISING: A MANDREL TUBULAR ELASTIC EXPANSIBLE SEAL MEANS ON SAID MANDRE; MEANS ON SAID MANDREL MOVABLE LONGITUDINALLY WITH RESPECT TO SAID SEAL MEANS TO ENGAGE OPPOSITE ENDS OF SAID SEAL MEANS FOR COMPRESSING SAID SEAL MEANS IN A LONGITUDINAL DIRECTION OF SAID MANDREL AND EXPANDING SAID SEAL MEANS IN A TRANSVERSE DIRECTION OF SAID MANDREL; MEANS ON SAID MANDREL LIMITING MOVEMENT OF SAID COMPRESSING MEANS WITH RESPECT TO SAID SEAL MEANS FOR LIMITING THE COMPRESSION OF SAID SEAL MEANS BY SAID COMPRESSING AND EXPANDING MEANS; MEANS ON SAID MANDREL AND SAID COMPRESSING MEANS COENGAGEABLE WHEN IN A PREDETERMINED POSITION WITH RESPECT TO SAID MANDREL FOR LOCKING SAID COMPRESSING AND EXPANDING MEANS IN COMPRESSION AND EXPANDING POSITION, SAID LOCKING MEANS BEING MOVABLE TO A SECOND PREDETERMINED POSITION WITH RESPECT TO SAID MANDREL FOR DISENGAGEMENT FROM LOCKING POSITION TO RELEASE FROM SAID COMPRESSION AND EXPANDING MEANS TO MOVEMENT FROM SAID COMPRESSING AND EXPANDING POSITION TO PERMIT SAID SEAL MEANS TO RETURN TO UNEXPANDED POSITION.
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |