Patent US3285485A successfully refreshed from Google Patents.
US3285485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for handling tubing or other elongate objects
Assignee: Bowen Tools Inc
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Filing: 1964-01-23
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Granted: 1966-11-15
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Expires: 1984-01-23
Abstract
No abstract record available.
Inventors
- 👤 Damon T Slator
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:58
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
AN APPARATUS FOR HANDLING AN ELONGATE OBJECT DURING LONGITUDINAL MOVEMENT THEREOF, COMPRISING: (A) A SUPPORT FRAME, (B) A PAIR OF ENDLESS GRIPPING ASSEMBLIES MOUNTED ON SAID SUPPORT FRAME FOR ENDLESS MOVEMENT RELATIVE TO EACH OTHER FOR ENGAGING AN ELONGATE OBJECT LONGITUDINALLY THEREBETWEEN, (C) EACH OF SAID GRIPPING ASSEMBLIES INCLUDING AN ENDLESS LOOP OF GRIPPING ELEMENTS, (D) A FLOATING PISTON AND CYLINDER MOUNTED ON SAID SUPPORT FRAME FOR RELATIVE MOVEMENT WITH RESPECT THERETO, (E) BACK-UP MEANS CONNECTED TO SAID PISTON AND ENGAGEABLE WITH THE INNER SURFACES OF A PORTION OF SAID GRIPPING ELEMENTS IN SAID REACH OF ONE OF SAID GRIPPING ASSEMBLIES FOR MAINTAINING SAID GRIPPING ELEMENTS IN CONTACT WITH THE ELONGATE OBJECT, (F) ADDITIONAL BACK-UP MEANS CONNECTED TO SAID CYLINDER AND ENGAGEABLE WITH THE INNER SURFACES OF ANOTHER PORTION OF SAID GRIPPING ELEMENTS IN SAID REACH OF SAID ONE OF SAID GRIPPING ASSEMBLIES, AND (G) FLUID MEANS OPERABLY CONNECTED WITH SAID PISTON AND CYLINDER FOR MOVING SAME RELATIVE TO EACH OTHER AND RELATIVE TO SAID FRAME FOR CAUSING BOTH OF SAID BACK-UP MEANS TO PRESS AGAINST THEIR RESPECTIVE PORTIONS WITH A RESILIENT FORCE.
Claim 2
Independent Claim
183 words
AN APPARATUS FOR HANDLING AN ELONGATE OBJECT DURING LONGITUDINAL MOVEMENT THEREOF, COMPRISING: (A) A SUPPORT FRAME, (B) A PAIR OF ENDLESS GRIPPING ASSEMBLIES MOUNTED ON SAID SUPPORT FRAME FOR ENDLESS MOVEMENT RELATIVE TO EACH OTHER FOR ENGAGING AN ELONGATE OBJECT LONGITUDINALLY THEREBETWEEN, (C) EACH OF SAID GRIPPING ASSEMBLIES INCLUDING AN ENDLESS LOOP OF GRIPPING ELEMENTS, (D) A FLOATING PISTON AND CYLINDER MOUNTED ON SAID SUPPORT FRAME FOR RELATIVE MOVEMENT WITH RESPECT THERETO, (E) BACK-UP MEANS CONNECTED TO SAID PISTON AND ENGAGEABLE WITH THE INNER SURFACES OF A PORTION OF SAID GRIPPING ELEMENTS IN SAID REACH OF ONE OF SAID GRIPPING ASSEMBLIES FOR MAINTAINING SAID GRIPPING ELEMENTS IN CONTACT WITH THE ELONGATE OBJECT, (F) ADDITIONAL BACK-UP MEANS CONNECTED TO SAID CYLINDER AND ENGAGEABLE WITH THE INNER SURFACES OF ANOTHER PORTION OF SAID GRIPPING ELEMENTS IN SAID REACH OF SAID ONE OF SAID GRIPPING ASSEMBLIES, AND (G) FLUID MEANS OPERABLY CONNECTED WITH SAID PISTON AND CYLINDER FOR MOVING SAME RELATIVE TO EACH OTHER AND RELATIVE TO SAID FRAME FOR CAUSING BOTH OF SAID BACK-UP MEANS TO PRESS AGAINST THEIR RESPECTIVE PORTIONS WITH A RESILIENT FORCE.
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |