Patent US3591147A successfully refreshed from Google Patents.
Patent US3292708A successfully refreshed from Google Patents.
US3292708A
Expired / Lapsed
US
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Tubing centralizer
Assignee: Individual
•
Filing: 1963-07-29
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Granted: 1966-12-20
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Louis C Mundt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:49
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A TUBING CENTRALIZER, COMPRISING A PAIR OF CLAMP PORTIONS ADAPTED TO BE DISPOSED ABOUT OPPOSITE SIDES OF THE TUBING, EACH CLAMP PORTION HAVING OPENINGS THEREIN, A WING RECEIVABLE THROUGH EACH SAID OPENING FOR EXTENSION OUTWARDLY FROM THE CLAMP PORTION, SHOULDER MEANS ON EACH WING AND THE CLAMP PORTION ENGAGEABLE WITH ONE ANOTHER TO SO LOCATE THE WING WITHIN SAID OPENING WHEN THE CLAMP PORTION ARE DISPOSED ABOUT THE TUBING, MEANS FORMING A PART OF SAID CLAMP PORTIONS LONGITUDINALLY INTERFITTING AND SUPPORTING ONE CLAMP PORTION FROM THE OTHER CLAMP PORTION, MERELY UPON SAID OTHER CLAMP PORTION BEING HELD AGAINST ITS SIDE OF THE TUBING AND SAID ONE CLAMP PORTION BEING MOVED LONGITUDINALLY ALONG THE OTHER SIDE OF THE TUBING TOWARD SAID OTHER CLAMP PORTION, AND MEANS FOR URGING THE INNER ENDS OF THE WINGS AGAINST THE TUBING SO AS TO HOLD THE SHOULDER MEANS THEREON IN ENGAGEMENT WITH THE SHOULDER MEANS ON THE CLAMP PORTION.
Claim 2
Dependent Claim
154 words
A TUBING CENTRALIZER, COMPRISING A PAIR OF CLAMP PORTIONS ADAPTED TO BE DISPOSED ABOUT OPPOSITE SIDES OF THE TUBING, EACH CLAMP PORTION HAVING OPENINGS THEREIN, A WING RECEIVABLE THROUGH EACH SAID OPENING FOR EXTENSION OUTWARDLY FROM THE CLAMP PORTION, SHOULDER MEANS ON EACH WING AND THE CLAMP PORTION ENGAGEABLE WITH ONE ANOTHER TO SO LOCATE THE WING WITHIN SAID OPENING WHEN THE CLAMP PORTION ARE DISPOSED ABOUT THE TUBING, MEANS FORMING A PART OF SAID CLAMP PORTIONS LONGITUDINALLY INTERFITTING AND SUPPORTING ONE CLAMP PORTION FROM THE OTHER CLAMP PORTION, MERELY UPON SAID OTHER CLAMP PORTION BEING HELD AGAINST ITS SIDE OF THE TUBING AND SAID ONE CLAMP PORTION BEING MOVED LONGITUDINALLY ALONG THE OTHER SIDE OF THE TUBING TOWARD SAID OTHER CLAMP PORTION, AND MEANS FOR URGING THE INNER ENDS OF THE WINGS AGAINST THE TUBING SO AS TO HOLD THE SHOULDER MEANS THEREON IN ENGAGEMENT WITH THE SHOULDER MEANS ON THE CLAMP PORTION.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |