Patent US3088532A successfully refreshed from Google Patents.
US3088532A
Expired / Lapsed
US
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Bit loading device
Assignee: Jersey Production Research Co
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Filing: 1960-12-27
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Granted: 1963-05-07
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Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jackson M Kellner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:32
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/18; E21B17/00; E21B17/02; E21B17/04; E21B17/07; E21B44/00; E21B44/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
AN APPARATUS FOR FORCING A BIT AGAINST THE BOTTOM OF A BOREHOLE COMPRISING: AN UPPER HOLLOW SHAFT SECTION; A LOWER HOLLOW SHAFT SECTION; A TELESCOPING JOINT SECTION CONNECTING SAID UPPER SHAFT SECTION AND SAID LOWER SHAFT SECTION IN A LONGITUDINAL SLIDABLE AND NON-ROTATABLE RELATIONSHIP, THE LONGITUDINAL MOVEMENT OF SAID UPPER SHAFT AND SAID LOWER SHAFT RELATIVE TO EACH OTHER BEING LIMITED IN EACH DIRECTION LONGITUDINALLY; A HOUSING MEMBER MOUNTED AROUND SAID UPPER SHAFT AND SAID LOWER SHAFT IN A LONGITUDINALLY SLIDABLE AND ROTATABLE RELATIONSHIP THEREWITH;PUSHDOWN MEANS POSITIONED BETWEEN SAID LOWER SHAFT SECTION AND SAID HOUSING OPERABLE TO EXERT A FORCE ON SAID LOWER SHAFT SECTION LONGITUDINALLY THEREOF IN THE DIRECTION OF SAID BIT AND TO EXERT THE REACTION THRUST OF SUCH FORCE ON SAID HOUSING MEMBER; MEANS TO TRANSFER THE FORCE ON SAID LOWER SHAFT SECTION TO SAID BIT; ANCHOR MEANS ATTACHED TO SAID OUTER HOUSING AND OF A CHARACTER TO TRANSFER THE REACTION THRUST TO THE BOREHOLE WALL.
Claim 2
Independent Claim
159 words
AN APPARATUS FOR FORCING A BIT AGAINST THE BOTTOM OF A BOREHOLE COMPRISING: AN UPPER HOLLOW SHAFT SECTION; A LOWER HOLLOW SHAFT SECTION; A TELESCOPING JOINT SECTION CONNECTING SAID UPPER SHAFT SECTION AND SAID LOWER SHAFT SECTION IN A LONGITUDINAL SLIDABLE AND NON-ROTATABLE RELATIONSHIP, THE LONGITUDINAL MOVEMENT OF SAID UPPER SHAFT AND SAID LOWER SHAFT RELATIVE TO EACH OTHER BEING LIMITED IN EACH DIRECTION LONGITUDINALLY; A HOUSING MEMBER MOUNTED AROUND SAID UPPER SHAFT AND SAID LOWER SHAFT IN A LONGITUDINALLY SLIDABLE AND ROTATABLE RELATIONSHIP THEREWITH;PUSHDOWN MEANS POSITIONED BETWEEN SAID LOWER SHAFT SECTION AND SAID HOUSING OPERABLE TO EXERT A FORCE ON SAID LOWER SHAFT SECTION LONGITUDINALLY THEREOF IN THE DIRECTION OF SAID BIT AND TO EXERT THE REACTION THRUST OF SUCH FORCE ON SAID HOUSING MEMBER; MEANS TO TRANSFER THE FORCE ON SAID LOWER SHAFT SECTION TO SAID BIT; ANCHOR MEANS ATTACHED TO SAID OUTER HOUSING AND OF A CHARACTER TO TRANSFER THE REACTION THRUST TO THE BOREHOLE WALL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |