US3237695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically set well packer
Assignee: Otis Engineering Corp
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Filing: 1962-11-30
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Granted: 1966-03-01
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Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 James H Bostock
- 👤 Frank H Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:57
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129; E21B33/1295
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
218 words
A WELL PACKER INCLUDING: A TUBULAR MANDREL; FIRST AND SECOND LONGITUDINALLY SPACED ANCHORING MEANS MOVABLY MOUNTED ON SAID MANDREL; FIRST EXPANDER MEANS ON SAID MANDREL FOR MOVING SAID FIRST ANCHORING MEANS OUTWARDLY UPON RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID FIRST EXPANDER MEANS AND SAID FIRST ANCHORING MEANS; SEALING MEANS ON SAID MANDREL; FIRST PRESSURE RESPONSIVE MEANS MOVABLY MOUNTED ON SAID MANDREL FOR CAUSING RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID FIRST ANCHORING MEANS AND SAID FIRST EXPANDER MEANS FOR MOVING SAID FIRST ANCHORING MEANS OUTWARDLY TO EXPANDED POSITION AND INTO ANCHORING ENGAGEMENT WITH A FLOW CONDUCTOR WHEN SAID MANDREL IS TELESCOPED IN SAID FLOW CONDUCTOR, SAID FIRST PRESSURE RESPONSIVE MEANS AND SAID ANCHORING MEANS ENGAGING SAID SEALING MEANS FOR EXPANDING SAID SEALING MEANS INTO SEALING ENGAGEMENT WITH THE FLOW CONDUCTOR AFTER SAID FIRST ANCHORING MEANS IS MOVED TO ANCHORING ENGAGEMENT WITH THE FLOW CONDUCTOR; SECOND EXPANDER MEANS ON SAID MANDREL FOR MOVING SAID SECOND ANCHORING MEANS OUTWARDLY UPON RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID SECOND EXPANDER MEANS AND SAID SECOND ANCHORING MEANS; SECOND PRESSURE RESPONSIVE MEANS MOVABLY MOUNTED ON THE MANDREL FOR CAUSING RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID SECOND ANCHORING MEANS AND SAID SECOND EXPANDER MEANS TO MOVE SAID SECOND ANCHORING MEANS LATERALLY OUTWARDLY OF SAID MANDREL TO EXPANDED POSITION TO ENGAGE THE WELL FLOW CONDUCTOR, EACH OF SAID PRESSURE RESPONSIVE MEANS
Claim 2
Dependent Claim
218 words
A WELL PACKER INCLUDING: A TUBULAR MANDREL; FIRST AND SECOND LONGITUDINALLY SPACED ANCHORING MEANS MOVABLY MOUNTED ON SAID MANDREL; FIRST EXPANDER MEANS ON SAID MANDREL FOR MOVING SAID FIRST ANCHORING MEANS OUTWARDLY UPON RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID FIRST EXPANDER MEANS AND SAID FIRST ANCHORING MEANS; SEALING MEANS ON SAID MANDREL; FIRST PRESSURE RESPONSIVE MEANS MOVABLY MOUNTED ON SAID MANDREL FOR CAUSING RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID FIRST ANCHORING MEANS AND SAID FIRST EXPANDER MEANS FOR MOVING SAID FIRST ANCHORING MEANS OUTWARDLY TO EXPANDED POSITION AND INTO ANCHORING ENGAGEMENT WITH A FLOW CONDUCTOR WHEN SAID MANDREL IS TELESCOPED IN SAID FLOW CONDUCTOR, SAID FIRST PRESSURE RESPONSIVE MEANS AND SAID ANCHORING MEANS ENGAGING SAID SEALING MEANS FOR EXPANDING SAID SEALING MEANS INTO SEALING ENGAGEMENT WITH THE FLOW CONDUCTOR AFTER SAID FIRST ANCHORING MEANS IS MOVED TO ANCHORING ENGAGEMENT WITH THE FLOW CONDUCTOR; SECOND EXPANDER MEANS ON SAID MANDREL FOR MOVING SAID SECOND ANCHORING MEANS OUTWARDLY UPON RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID SECOND EXPANDER MEANS AND SAID SECOND ANCHORING MEANS; SECOND PRESSURE RESPONSIVE MEANS MOVABLY MOUNTED ON THE MANDREL FOR CAUSING RELATIVE LONGITUDINAL MOVEMENT BETWEEN SAID SECOND ANCHORING MEANS AND SAID SECOND EXPANDER MEANS TO MOVE SAID SECOND ANCHORING MEANS LATERALLY OUTWARDLY OF SAID MANDREL TO EXPANDED POSITION TO ENGAGE THE WELL FLOW CONDUCTOR, EACH OF SAID PRESSURE RESPONSIVE MEANS
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |