US3416610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load support for well casing
Assignee: Individual
•
Filing: 1966-09-29
•
Granted: 1968-12-17
•
Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert E Prescott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:37
CPC Classifications
E; E21; E21B; E21B23/00; E21B23/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
LOAD SUPPORTING MEANS FOR USE IN A WELL CASING, COMPRISING A DEVICE HAVING ELEMENTS WHEN UNSTRESSED, IN OPPOSITE DIRECTIONS TO AN OVERALL DISTANCE SLIGHTLY GREATER THAN THE INTERIOR DIAMETER OF THE CASING IN WHICH THE DEVICE IS TO BE USED, SAID ELEMENTS BEING RESILIENTLY DEFLECTABLE TO BE INCLINED WITH RESPECT TO THE AXIS OF A CASING WHEN THE DEVICE IS INSERTED THEREIN, SAID ELEMENTS BEING CAPABLE OF YIELDING TOWARD THE AXIS OF THE CASING TO REVERSE THE INCLINATION THEREOF WHEN SUFFICIENT FORCE IS APPLIED TO THE DEVICE IN AN AXIAL DIRECTION, SAID DEVICE COMPRISING A FRAME INCLUDING TWO PARALLEL STIFFLY RESILIENT RODS, A NUMBER OF DISKS OF EQUAL SIZE LOOSELY THREADED ON EACH OF SAID RODS, AND MEANS ON EACH SAID ROD RESILIENTLY MAINTAINING SAID DISKS AT RIGHT ANGLES TO SAID RODS WHEN UNSTRESSED.
Claim 2
Dependent Claim
134 words
LOAD SUPPORTING MEANS FOR USE IN A WELL CASING, COMPRISING A DEVICE HAVING ELEMENTS WHEN UNSTRESSED, IN OPPOSITE DIRECTIONS TO AN OVERALL DISTANCE SLIGHTLY GREATER THAN THE INTERIOR DIAMETER OF THE CASING IN WHICH THE DEVICE IS TO BE USED, SAID ELEMENTS BEING RESILIENTLY DEFLECTABLE TO BE INCLINED WITH RESPECT TO THE AXIS OF A CASING WHEN THE DEVICE IS INSERTED THEREIN, SAID ELEMENTS BEING CAPABLE OF YIELDING TOWARD THE AXIS OF THE CASING TO REVERSE THE INCLINATION THEREOF WHEN SUFFICIENT FORCE IS APPLIED TO THE DEVICE IN AN AXIAL DIRECTION, SAID DEVICE COMPRISING A FRAME INCLUDING TWO PARALLEL STIFFLY RESILIENT RODS, A NUMBER OF DISKS OF EQUAL SIZE LOOSELY THREADED ON EACH OF SAID RODS, AND MEANS ON EACH SAID ROD RESILIENTLY MAINTAINING SAID DISKS AT RIGHT ANGLES TO SAID RODS WHEN UNSTRESSED.
References Cited (Backward Citations)
US3112794A
Cited
US3177941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |