US3096824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripping devices
Assignee: Individual
•
Filing: 1958-10-23
•
Granted: 1963-07-09
•
Expires: 1978-10-23
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:27
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/129
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A GRIPPING DEVICE FOR ANCHORING A MEMBER WITHIN A WELL BORE INCLUDING, A MANDREL CONNECTED WITH THE MEMBER, A GRIPPING ELEMENT MOUNTED UPON THE MANDREL FOR MOVEMENT OUTWARDLY INTO CONTACT WITH THE WALL OF THE WELL AND ALSO MOUNTED UPON THE MANDREL FOR ROTATIONAL MOVEMENT RELATIVE THERETO, SAID ELEMENT HAVING A NON-GRIPPING SURFACE AND A GRIPPING SURFACE SPACED CIRCUMFERENTIALLY AND RADIALLY INWARD THEREFROM FOR NON-ENGAGEMENT WITH SAID WALL WHEN SAID NON-GRIPPING SURFACE IS IN ENGAGEMENT WITH SAID WALL, MEANS NORMALLY URGING SAID GRIPPING ELEMENT RADIALLY OUTWARD SO THAT SAID NON-GRIPPING SURFACE IS IN SLIDABLE CONTACT WITH SAID WALL, AND COACTING MEANS ON SAID MANDREL AND SAID GRIPPING ELEMENT ENGAGEABLE WITH EACH OTHER WHEN THE MANDREL IS ROTATED WITH RESPECT TO THE ELEMENT FOR URGING THE GRIPPING SURFACE OF SAID ELEMENT INTO TIGHT FRICTIONAL ENGAGEMENT WITH THE WALL OF THE BORE TO THEREBY ANCHOR SAID MANDREL AND MEMBER THEREIN.
Claim 2
Dependent Claim
148 words
A GRIPPING DEVICE FOR ANCHORING A MEMBER WITHIN A WELL BORE INCLUDING, A MANDREL CONNECTED WITH THE MEMBER, A GRIPPING ELEMENT MOUNTED UPON THE MANDREL FOR MOVEMENT OUTWARDLY INTO CONTACT WITH THE WALL OF THE WELL AND ALSO MOUNTED UPON THE MANDREL FOR ROTATIONAL MOVEMENT RELATIVE THERETO, SAID ELEMENT HAVING A NON-GRIPPING SURFACE AND A GRIPPING SURFACE SPACED CIRCUMFERENTIALLY AND RADIALLY INWARD THEREFROM FOR NON-ENGAGEMENT WITH SAID WALL WHEN SAID NON-GRIPPING SURFACE IS IN ENGAGEMENT WITH SAID WALL, MEANS NORMALLY URGING SAID GRIPPING ELEMENT RADIALLY OUTWARD SO THAT SAID NON-GRIPPING SURFACE IS IN SLIDABLE CONTACT WITH SAID WALL, AND COACTING MEANS ON SAID MANDREL AND SAID GRIPPING ELEMENT ENGAGEABLE WITH EACH OTHER WHEN THE MANDREL IS ROTATED WITH RESPECT TO THE ELEMENT FOR URGING THE GRIPPING SURFACE OF SAID ELEMENT INTO TIGHT FRICTIONAL ENGAGEMENT WITH THE WALL OF THE BORE TO THEREBY ANCHOR SAID MANDREL AND MEMBER THEREIN.
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) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |