Patent US2730246A successfully refreshed from Google Patents.
US2730246A
Expired / Lapsed
US
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Apparatus for handling pipe in a derrick
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1951-11-03
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Granted: 1956-01-10
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Expires: 1971-11-03
Abstract
No abstract record available.
Inventors
- 👤 Albert L Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:39
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
APPARATUS FOR HANDLING PIPE IN A DERRICK HAVING AT LEAST ONE SIDE, COMPRISING: A LINEAR TRACKWAY ADAPTED TO BE MOUNTED SUBSTANTIALLY HORIZONTALLY IN THE DERRICK SUBSTANTIALLY PARALLEL TO A SIDE OF THE DERRICK; A CARRIAGE MOUNTED ON SAID TRACKWAY FOR MOVEMENT THEREALONG; AN ARM HAVING A PIPE-ENGAGING MEMBER THEREON, SAID PIPEENGAGING MEMBER HAVING MEANS ADAPTED TO EMBRACE A PIPE AND BEING CONSTRAINED TO MOVE HORIZONTALLY IN UNISON WITH SAID ARM; MEANS MOUNTING SAID ARM ON SAID CARRIAGE WITH ITS LONGITUDINAL AXIS SUBSTANTIALLY HORIZONTAL AND IN FIXED SUBSTANTIALLY PERPENDICULAR RELATION TO SAID TRACKWAY, SAID ARM BEING MOVABLE LONGITUDINALLY THEREOF RELATIVE TO SAID MOUNTING MEANS TO MOVE SAID PIPE-ENGAGING MEMBER TOWARD AND AWAY FROM THE VERTICAL CENTERLINE OF THE DERRICK AND THE SIDE OF THE DERRICK ON WHICH SAID TRACKWAY IS MOUNTED; MEANS FOR MOVING SAID CARRIAGE ALONG SAID TRACKWAY; AND MEANS FOR MOVING SAID ARM RELATIVE TO ITS MOUNTING MEANS.
Claim 2
Dependent Claim
149 words
APPARATUS FOR HANDLING PIPE IN A DERRICK HAVING AT LEAST ONE SIDE, COMPRISING: A LINEAR TRACKWAY ADAPTED TO BE MOUNTED SUBSTANTIALLY HORIZONTALLY IN THE DERRICK SUBSTANTIALLY PARALLEL TO A SIDE OF THE DERRICK; A CARRIAGE MOUNTED ON SAID TRACKWAY FOR MOVEMENT THEREALONG; AN ARM HAVING A PIPE-ENGAGING MEMBER THEREON, SAID PIPEENGAGING MEMBER HAVING MEANS ADAPTED TO EMBRACE A PIPE AND BEING CONSTRAINED TO MOVE HORIZONTALLY IN UNISON WITH SAID ARM; MEANS MOUNTING SAID ARM ON SAID CARRIAGE WITH ITS LONGITUDINAL AXIS SUBSTANTIALLY HORIZONTAL AND IN FIXED SUBSTANTIALLY PERPENDICULAR RELATION TO SAID TRACKWAY, SAID ARM BEING MOVABLE LONGITUDINALLY THEREOF RELATIVE TO SAID MOUNTING MEANS TO MOVE SAID PIPE-ENGAGING MEMBER TOWARD AND AWAY FROM THE VERTICAL CENTERLINE OF THE DERRICK AND THE SIDE OF THE DERRICK ON WHICH SAID TRACKWAY IS MOUNTED; MEANS FOR MOVING SAID CARRIAGE ALONG SAID TRACKWAY; AND MEANS FOR MOVING SAID ARM RELATIVE TO ITS MOUNTING 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) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |