US3147029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stop device for use with well casing
Assignee: Trojan Inc
•
Filing: 1962-07-20
•
Granted: 1964-09-01
•
Expires: 1982-07-20
Abstract
No abstract record available.
Inventors
- 👤 Sr Jesse E Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:14
CPC Classifications
A; A44; A44B; A44B19/00; A44B19/24; A44B19/40; A44B19/406; E; E21; E21B; E21B37/00; E21B37/02; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/47; Y10T24/4755
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A STOP COLLAR FOR USE WITH A WELL CASING, THE COMBINATION OF A FLEXIBLE INTERRUPTED CIRCULAR BAND HAVING CONFRONTING END PORTIONS AND AT LEAST ONE CIRCUMFERENTIAL RIB FORMED ON A FACE THEREOF TO PROVIDE SPACED PARALLEL ANNULAR SHOULDERS, A FLEXIBLE WEDGING STRIP DISPOSED ADJACENT SAID FACE AND EXTENDING SUBSTANTIALLY FROM ONE END OF SAID BAND TO THE OTHER, SAID WEDGING STRIP HAVING A CENTRAL PORTION OVERLYING SAID RIB ALONG THE LENGTH THEREOF, THE MARGINAL EDGES OF SAID STRIP ON OPPOSITE SIDES OF SAID CENTRAL PORTION BEING SCALLOPED TO PROVIDE ALTERNATELY DIRECTED PROJECTIONS ALONG SAID MARGINAL EDGES DIRECTED TOWARD AND AWAY FROM SAID FACE, THOSE PROJECTIONS DIRECTED TOWARD SAID FACE ADAPTED TO COOPERATE WITH THEIR RESPECTIVELY ADJACENT SHOULDERS UPON RELATIVE AXIAL MOVEMENT BETWEEN SAID BAND AND STRIP AND APPLY A FORCE TENDING TO MOVE THE STRIP RADIALLY AWAY FROM SAID FACE, AND RELEASABLE MEANS FOR CONNECTING SAID ENDS OF SAID BAND.
Claim 2
Dependent Claim
151 words
IN A STOP COLLAR FOR USE WITH A WELL CASING, THE COMBINATION OF A FLEXIBLE INTERRUPTED CIRCULAR BAND HAVING CONFRONTING END PORTIONS AND AT LEAST ONE CIRCUMFERENTIAL RIB FORMED ON A FACE THEREOF TO PROVIDE SPACED PARALLEL ANNULAR SHOULDERS, A FLEXIBLE WEDGING STRIP DISPOSED ADJACENT SAID FACE AND EXTENDING SUBSTANTIALLY FROM ONE END OF SAID BAND TO THE OTHER, SAID WEDGING STRIP HAVING A CENTRAL PORTION OVERLYING SAID RIB ALONG THE LENGTH THEREOF, THE MARGINAL EDGES OF SAID STRIP ON OPPOSITE SIDES OF SAID CENTRAL PORTION BEING SCALLOPED TO PROVIDE ALTERNATELY DIRECTED PROJECTIONS ALONG SAID MARGINAL EDGES DIRECTED TOWARD AND AWAY FROM SAID FACE, THOSE PROJECTIONS DIRECTED TOWARD SAID FACE ADAPTED TO COOPERATE WITH THEIR RESPECTIVELY ADJACENT SHOULDERS UPON RELATIVE AXIAL MOVEMENT BETWEEN SAID BAND AND STRIP AND APPLY A FORCE TENDING TO MOVE THE STRIP RADIALLY AWAY FROM SAID FACE, AND RELEASABLE MEANS FOR CONNECTING SAID ENDS OF SAID BAND.
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |