US3292706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure responsive valve
Assignee: Otis Engineering Corp
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Filing: 1963-07-26
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Granted: 1966-12-20
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Expires: 1983-07-26
Abstract
No abstract record available.
Inventors
- 👤 George G Grimmer
- 👤 Mccasland Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:13
CPC Classifications
E; E21; E21B; E21B34/00; E21B34/06; E21B34/08; E21B2200/00; E21B2200/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7726
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
A WALL TOOL INCLUDING: A TUBULAR MEMBER CONNECTABLE IN A FLOW CONDUCTOR TO CONSTITUTE A SECTION THEREOF, SAID TUBULAR MEMBER HAVING A FLOW PASSAGE THERETHROUGH AND A PORT INTERMEDIATE THE ENDS THEREOF COMMUNICATING THE EXTERIOR OF THE TUBULAR MEMBER AND SAID FLOW PASSAGE; AN AUXILIARY VALVE MOVABLY CARRIED BY SAID TUBULAR MEMBER AND MOVABLE RELATIVE THERETO BETWEEN A FIRST POSITION WHEREIN SAID PORT IS OPEN AND A SECOND POSITION WHEREIN SAID AUXILIARY VALVE CLOSES SAID PORT; AND A VALVE FOR CLOSING SAID FLOW PASSAGE OF SAID TUBULAR MEMBER INCLUDING A MANDREL HAVING A FLOW PASSAGE THERETHROUGH, VALVE MEANS FOR CLOSING SAID FLOW PASSAGE OF SAID MANDREL AND OPERATOR MEANS FOR MOVING SAID VALVE MEANS BETWEEN OPEN AND CLOSED POSITIONS, SAID MANDREL AND SAID TUBULAR MEMBER HAVING CO-ENGAGEABLE MEANS FOR RELEASABLY HOLDING SAID MANDREL IN A PREDETERMINED POSITION IN SAID TUBULAR MEMBER, SAID OPERATOR MEANS BEING EXPOSED TO THE PRESSURE FROM THE EXTERIOR OF SAID TUBULAR MEMBER WHEN SAID MANDREL IS IN SAID PREDETERMINED POSITION IN SAID TUBULAR MEMBER AND SAID AUXILIARY VALVE MEANS OF SAID TUBULAR MEMBER IS IN SAID OPEN POSITION AND IS RESPONSIVE TO SAID PRESSURE FOR MOVING THE VALVE MEANS TO CLOSED POSITION.
Claim 2
Dependent Claim
196 words
A WALL TOOL INCLUDING: A TUBULAR MEMBER CONNECTABLE IN A FLOW CONDUCTOR TO CONSTITUTE A SECTION THEREOF, SAID TUBULAR MEMBER HAVING A FLOW PASSAGE THERETHROUGH AND A PORT INTERMEDIATE THE ENDS THEREOF COMMUNICATING THE EXTERIOR OF THE TUBULAR MEMBER AND SAID FLOW PASSAGE; AN AUXILIARY VALVE MOVABLY CARRIED BY SAID TUBULAR MEMBER AND MOVABLE RELATIVE THERETO BETWEEN A FIRST POSITION WHEREIN SAID PORT IS OPEN AND A SECOND POSITION WHEREIN SAID AUXILIARY VALVE CLOSES SAID PORT; AND A VALVE FOR CLOSING SAID FLOW PASSAGE OF SAID TUBULAR MEMBER INCLUDING A MANDREL HAVING A FLOW PASSAGE THERETHROUGH, VALVE MEANS FOR CLOSING SAID FLOW PASSAGE OF SAID MANDREL AND OPERATOR MEANS FOR MOVING SAID VALVE MEANS BETWEEN OPEN AND CLOSED POSITIONS, SAID MANDREL AND SAID TUBULAR MEMBER HAVING CO-ENGAGEABLE MEANS FOR RELEASABLY HOLDING SAID MANDREL IN A PREDETERMINED POSITION IN SAID TUBULAR MEMBER, SAID OPERATOR MEANS BEING EXPOSED TO THE PRESSURE FROM THE EXTERIOR OF SAID TUBULAR MEMBER WHEN SAID MANDREL IS IN SAID PREDETERMINED POSITION IN SAID TUBULAR MEMBER AND SAID AUXILIARY VALVE MEANS OF SAID TUBULAR MEMBER IS IN SAID OPEN POSITION AND IS RESPONSIVE TO SAID PRESSURE FOR MOVING THE VALVE MEANS TO CLOSED POSITION.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |