Patent US3285353A successfully refreshed from Google Patents.
US3285353A
Expired / Lapsed
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Hydraulic jarring tool
Assignee: Schlumberger Well Surveying Corp
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Filing: 1964-03-11
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Granted: 1966-11-15
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 David E Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:06
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/107; E21B31/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A WELL JAR FOR USE IN A WELL BORE COMPRISING; TELESCOPICALLY ARRANGED MEMBERS, A TUBULAR HOUSING SLIDABLY POSITIONED OVER SAID TELESCOPING MEMBERS, MEANS ARRANGED BETWEEN SAID HOUSING AND ONE OF SAID MEMBERS FOR RELEASABLY HOLDING SAID HOUSING FROM SUBSTANTIAL LONGITUDINAL MOVEMENT RELATIVE TO SAID ONE MEMBER, MEANS ARRANGED BETWEEN THE OTHER OF SAID MEMBERS AND SAID HOUSING FOR TRANSMITTING A LARGE UPWARDLY DIRECTED FORCE APPLIED TO SAID HOUSING, AND OTHER MEMBER TO SAID HOUSING, AND MEANS RESPONSIVE TO A MUCH LESSOR FORCE GENERATED BY SAID LARGE FORCE FOR RELEASING SAID HOLDING MEANS AFTER A TIME DELAY TO PERMIT RELATIVE MOVEMENT BETWEEN SAID HOUSING AND SAID ONE MEMBER.
Claim 2
Dependent Claim
107 words
A WELL JAR FOR USE IN A WELL BORE COMPRISING; TELESCOPICALLY ARRANGED MEMBERS, A TUBULAR HOUSING SLIDABLY POSITIONED OVER SAID TELESCOPING MEMBERS, MEANS ARRANGED BETWEEN SAID HOUSING AND ONE OF SAID MEMBERS FOR RELEASABLY HOLDING SAID HOUSING FROM SUBSTANTIAL LONGITUDINAL MOVEMENT RELATIVE TO SAID ONE MEMBER, MEANS ARRANGED BETWEEN THE OTHER OF SAID MEMBERS AND SAID HOUSING FOR TRANSMITTING A LARGE UPWARDLY DIRECTED FORCE APPLIED TO SAID HOUSING, AND OTHER MEMBER TO SAID HOUSING, AND MEANS RESPONSIVE TO A MUCH LESSOR FORCE GENERATED BY SAID LARGE FORCE FOR RELEASING SAID HOLDING MEANS AFTER A TIME DELAY TO PERMIT RELATIVE MOVEMENT BETWEEN SAID HOUSING AND SAID ONE MEMBER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |