US3095736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stuck pipe locator
Assignee: Houston Oil Field Material Co Inc
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Filing: 1959-10-21
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Granted: 1963-07-02
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Expires: 1979-10-21
Abstract
No abstract record available.
Inventors
- 👤 Austin S Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:10
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
AN APPARATUS FOR DETERMINING THE POINT AT WHICH PIPE IS STUCK IN A WALL BORE COMPRISING, A RIGID MAGNETICALLY PERMEABLE MEMBER, FIRST RELEASABLY CONNECTING MEANS CONNECTED TO THE MEMBER FOR RELEASABLY CONNECTING THE MEMBER INSIDE OF AND TO THE WALL OF THE PIPE, CLUTCH ELEMENTS ONE OF WHICH IS CONNECTED TO SAID PERMEABLE MEMBER, SAID CLUTCH ELEMENTS BEING ACTUATED ON MOVEMENT RELATIVE TO EACH OTHER, SECOND RELEASABLY CONNECTED MEANS SPACED FROM SAID FIRST MEANS AND CONNECTED TO THE SECOND OF SAID CLUTCH ELEMENTS FOR RELEASABLY CONNECTING SAID MEMBER TO THE INSIDE OF AND AT A POINT OF THE WALL OF THE PIPE SPACED FROM THE FIRST MEANS, MEANS ELECTRICALLY COUPLED TO SAID PERMEABLE MEMBER FOR MEASURING CHANGES IN THE PERMEANCE OF SAID MEMBER CAUSED BY A CHANGE IN THE STRESS APPLIED TO SAID MEMBER WHEREBY WHEN FORCE IS APPLIED TO SAID PIPE AND TRANSMITTED TO SAID PERMEABLE MEMBER THE LOCATION OF THE STUCK POINT MAY BE DETERMINED.
Claim 2
Independent Claim
157 words
AN APPARATUS FOR DETERMINING THE POINT AT WHICH PIPE IS STUCK IN A WALL BORE COMPRISING, A RIGID MAGNETICALLY PERMEABLE MEMBER, FIRST RELEASABLY CONNECTING MEANS CONNECTED TO THE MEMBER FOR RELEASABLY CONNECTING THE MEMBER INSIDE OF AND TO THE WALL OF THE PIPE, CLUTCH ELEMENTS ONE OF WHICH IS CONNECTED TO SAID PERMEABLE MEMBER, SAID CLUTCH ELEMENTS BEING ACTUATED ON MOVEMENT RELATIVE TO EACH OTHER, SECOND RELEASABLY CONNECTED MEANS SPACED FROM SAID FIRST MEANS AND CONNECTED TO THE SECOND OF SAID CLUTCH ELEMENTS FOR RELEASABLY CONNECTING SAID MEMBER TO THE INSIDE OF AND AT A POINT OF THE WALL OF THE PIPE SPACED FROM THE FIRST MEANS, MEANS ELECTRICALLY COUPLED TO SAID PERMEABLE MEMBER FOR MEASURING CHANGES IN THE PERMEANCE OF SAID MEMBER CAUSED BY A CHANGE IN THE STRESS APPLIED TO SAID MEMBER WHEREBY WHEN FORCE IS APPLIED TO SAID PIPE AND TRANSMITTED TO SAID PERMEABLE MEMBER THE LOCATION OF THE STUCK POINT MAY BE DETERMINED.
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) | 1966-07-01 | 1966-12-31 | 1967-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-01 | 1970-12-31 | 1971-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-01 | 1974-12-31 | 1975-07-02 | $7700.00 | Window Closed / Lapsed |