US3208788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well tools
Assignee: Otis Engineering Corp
•
Filing: 1963-08-19
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Granted: 1965-09-28
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Expires: 1983-08-19
Abstract
No abstract record available.
Inventors
- 👤 James T Roark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:00
CPC Classifications
E; E21; E21B; E21B31/00; E21B31/12; E21B31/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A RETRIEVING TOOL INCLUDING: A TUBULAR MEMBER; HYDRAULICALLY ACTUATED GRIPPING MEANS MOVABLE IN SAID TUBULAR MEMBER FOR ENGAGING AN OBJECT RECEIVABLE IN SAID TUBULAR MEMBER; AND PUMP MEANS CARRIUED BY SAID TUBULAR MEMBER FOR SUPPLYING FLUID UNDER PRESSURE TO SAID GRIPPING MEANS TO MOVE SAID GRIPPING MEANS RELATIVE TO SAID TUBULAR MEMBER AND INTO ENGAGEMENT WITH SAID OBJECT IN SAID TUBULAR MEMBER, SAID PUMP MEANS BEING ENGAGEABLE WITH A SURFACE IN SAID TUBULAR MEMBER TO LIMIT MOVEMENT OF SIAD PUMP MEANS RELATIVE TO SAI D TUBULAR MEMBER, WHEREBY MOVEMENT OF SAID TUBULAR MEMBER RELATIVE TO THE OBJECT AND TO SAID PUMP MEANS AFTER SAID PUMP MEANS HAS BEEN ENGAGED BY SAID SURFACE CAUSES LIQUID UNDER PRESSURE TO BE SUPPLIED TO SAID GRIPPING MEANS TO MOVE SAID GRIPPING MEANS INTO GRIPPING ENGAGEMENT WITH THE OBJECT.
Claim 2
Dependent Claim
134 words
A RETRIEVING TOOL INCLUDING: A TUBULAR MEMBER; HYDRAULICALLY ACTUATED GRIPPING MEANS MOVABLE IN SAID TUBULAR MEMBER FOR ENGAGING AN OBJECT RECEIVABLE IN SAID TUBULAR MEMBER; AND PUMP MEANS CARRIUED BY SAID TUBULAR MEMBER FOR SUPPLYING FLUID UNDER PRESSURE TO SAID GRIPPING MEANS TO MOVE SAID GRIPPING MEANS RELATIVE TO SAID TUBULAR MEMBER AND INTO ENGAGEMENT WITH SAID OBJECT IN SAID TUBULAR MEMBER, SAID PUMP MEANS BEING ENGAGEABLE WITH A SURFACE IN SAID TUBULAR MEMBER TO LIMIT MOVEMENT OF SIAD PUMP MEANS RELATIVE TO SAI D TUBULAR MEMBER, WHEREBY MOVEMENT OF SAID TUBULAR MEMBER RELATIVE TO THE OBJECT AND TO SAID PUMP MEANS AFTER SAID PUMP MEANS HAS BEEN ENGAGED BY SAID SURFACE CAUSES LIQUID UNDER PRESSURE TO BE SUPPLIED TO SAID GRIPPING MEANS TO MOVE SAID GRIPPING MEANS INTO GRIPPING ENGAGEMENT WITH THE OBJECT.
References Cited (Backward Citations)
US1795322A
Cited
US1757363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |