US3197835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-operated elevator devices for well pipe
Assignee: Individual
•
Filing: 1962-07-02
•
Granted: 1965-08-03
•
Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:47
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/02; E21B19/06; E21B19/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN ELEVATOR DEVICE FOR HANDLING A PLURALITY OF PIPES INCLUDING, A BODY ADAPTED TO BE SUSPENDED WITHIN A WELL DERRICK AND HAVING A PLURALITY OF VERTICAL OPENINGS EXTENDING THERETHROUGH, EACH OPENING BEING ADAPTED TO HAVE A PIPE EXTENDING THERETHROUGH, A SET OF PIPE SUPPORTING MEMBERS ASSOCIATED SURFACES ENGAGABLE WITH THE PIPE PROJECTREGULAR GRIPPING SURFACES ENGAGABLE WITH THE PIPE PROJECTING THROUGH SAID OPENING FOR SUPPORTING THE SAME; MEANS MOUNTING AT LEAST ONE OF SAID SUPPORTING MEMBERS OF EACH SET FOR MOVEMENT IN A LATERAL DIRECTION WITH RESPECT TO THE PIPE, WHEREBY THE GRIPPING SURFACES OF ALL SUPPORTING MEMBERS OF SAID SET MAY BE ENGAGED WITH OR
Claim 2
Dependent Claim
105 words
AN ELEVATOR DEVICE FOR HANDLING A PLURALITY OF PIPES INCLUDING, A BODY ADAPTED TO BE SUSPENDED WITHIN A WELL DERRICK AND HAVING A PLURALITY OF VERTICAL OPENINGS EXTENDING THERETHROUGH, EACH OPENING BEING ADAPTED TO HAVE A PIPE EXTENDING THERETHROUGH, A SET OF PIPE SUPPORTING MEMBERS ASSOCIATED SURFACES ENGAGABLE WITH THE PIPE PROJECTREGULAR GRIPPING SURFACES ENGAGABLE WITH THE PIPE PROJECTING THROUGH SAID OPENING FOR SUPPORTING THE SAME; MEANS MOUNTING AT LEAST ONE OF SAID SUPPORTING MEMBERS OF EACH SET FOR MOVEMENT IN A LATERAL DIRECTION WITH RESPECT TO THE PIPE, WHEREBY THE GRIPPING SURFACES OF ALL SUPPORTING MEMBERS OF SAID SET MAY BE ENGAGED WITH OR
References Cited (Backward Citations)
AT7867B
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US734510A
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US768915A
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US881519A
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US1400701A
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US1676275A
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US1659783A
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US1708051A
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US1731128A
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US1817467A
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US2068217A
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US2071937A
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US2335355A
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US2298507A
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US2615682A
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US2814461A
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US2896003A
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US2919925A
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |