US3158206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic weight control and compensating apparatus
Assignee: Individual
•
Filing: 1962-07-26
•
Granted: 1964-11-24
•
Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 Archer W Kammerer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:55
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/09; Y; Y10; Y10S; Y10S254/00; Y10S254/90; Y10S60/00; Y10S60/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN APPARATUS FOR MAINTAINING A PREDETERMINED STRESS IN A RUNNING-IN STRING DISPOSED IN A WELL BORE UNDERLYING A BODY OF WATER AND WHICH IS SUPPORTED BY A RIG MOUNTED ON A BARGE, OR THE LIKE, FLOATING IN THE BODY OF WATER: CYLINDER MEANS; PISTON MEANS SLIDABLE IN SAID CYLINDER MEANS; A FIRST OF SAID MEANS BEING ADAPTED FOR OPERATIVE CONNECTION TO THE RUNNING-IN STRING AND A SECOND OF SAID MEANS BEING ADAPTED FOR OPERATIVE CONNECTION WITH THE RIG; MEANS FOR MAINTAINING FLUID UNDER PRESSURE IN SAID CYLINDER MEANS AS SAID PISTON MEANS AND CYLINDER MEANS MOVE LONGITUDINALLY RELATIVE TO EACH OTHER, WHEREBY THE STRESS IN THE RUNNING-IN STRING IS TRANSFERRED THROUGH SAID FIRST MEANS AND HAVING FLUID THEREIN AT SUBSTANTIALLY THE SAME PRESSURE AS SAID CYLINDER MEANS AND FLUID TO SAID SECOND MEANS TO THE RIG; AND AN EXPANSION CHAMBER IN FLUID COMMUNICATION WITH SAID CYLINDER MEANS TO ALLOW FLUID UNDER PRESSURE TO TRANSFER BETWEEN SAID CYLINDER MEANS AND CHAMBER AS THE RIG AND BARGE MOVE VERTICALLY IN THE BODY OF WATER.
Claim 2
Dependent Claim
172 words
IN APPARATUS FOR MAINTAINING A PREDETERMINED STRESS IN A RUNNING-IN STRING DISPOSED IN A WELL BORE UNDERLYING A BODY OF WATER AND WHICH IS SUPPORTED BY A RIG MOUNTED ON A BARGE, OR THE LIKE, FLOATING IN THE BODY OF WATER: CYLINDER MEANS; PISTON MEANS SLIDABLE IN SAID CYLINDER MEANS; A FIRST OF SAID MEANS BEING ADAPTED FOR OPERATIVE CONNECTION TO THE RUNNING-IN STRING AND A SECOND OF SAID MEANS BEING ADAPTED FOR OPERATIVE CONNECTION WITH THE RIG; MEANS FOR MAINTAINING FLUID UNDER PRESSURE IN SAID CYLINDER MEANS AS SAID PISTON MEANS AND CYLINDER MEANS MOVE LONGITUDINALLY RELATIVE TO EACH OTHER, WHEREBY THE STRESS IN THE RUNNING-IN STRING IS TRANSFERRED THROUGH SAID FIRST MEANS AND HAVING FLUID THEREIN AT SUBSTANTIALLY THE SAME PRESSURE AS SAID CYLINDER MEANS AND FLUID TO SAID SECOND MEANS TO THE RIG; AND AN EXPANSION CHAMBER IN FLUID COMMUNICATION WITH SAID CYLINDER MEANS TO ALLOW FLUID UNDER PRESSURE TO TRANSFER BETWEEN SAID CYLINDER MEANS AND CHAMBER AS THE RIG AND BARGE MOVE VERTICALLY IN THE BODY OF WATER.
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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |