US3288455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock absorber for pumps
Assignee: Robinson Technical Products Inc
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Filing: 1964-12-29
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Granted: 1966-11-29
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Expires: 1984-12-29
Abstract
No abstract record available.
Inventors
- 👤 Cecil S Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/144; F04B53/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A SHOCK ABSORBING COUPLING FOR CONNECTION BETWEEN A PUMPING MECHANISM INCLUDING A PLURALITY OF LENGTHS OF VERTICALLY DEPENDING FLEXIBLE CABLE WHICH ARE CYCLICALLY LIFTED AND LOWERED IN A PUMPING OPERATION, AND A PUMP ROD STRING INCLUDING A LENGTH OF ROD EXTENDING VERTICALLY FROM A WELL HEAD, THE COMBINATION OF A RIGID BASE MEMBER HAVING A PASSAGEWAY THERETHROUGH FOR THE FREE PASSAGE OF THE LENGTH OF ROD; A RIGID LOAD-SUPPORTING MEMBER POSITIONED ABOVE SAID BASE MEMBER; MEANS FOR ATTACHING THE LENGTH OF ROD EXTENDING THROUGH SAID BASE MEMBER TO SAID LOAD-SUPPORTING MEMBER; SPRING MEANS EXTENDING VERTICALLY BETWEEN SAID BASE MEMBER AND SAID LOAD-SUPPORTING MEMBER TO SUPPORT SAID LOAD-SUPPORTING MEMBER AND THE ROD STRING FOR YIELDING MOVEMENT RELATIVE TO SAID BASE MEMBER IN RESPONSE TO FORCES APPLIED TO SAID BASE MEMBER FOR LIFTING SAID ROD STRING AND IN
Claim 2
Dependent Claim
137 words
IN A SHOCK ABSORBING COUPLING FOR CONNECTION BETWEEN A PUMPING MECHANISM INCLUDING A PLURALITY OF LENGTHS OF VERTICALLY DEPENDING FLEXIBLE CABLE WHICH ARE CYCLICALLY LIFTED AND LOWERED IN A PUMPING OPERATION, AND A PUMP ROD STRING INCLUDING A LENGTH OF ROD EXTENDING VERTICALLY FROM A WELL HEAD, THE COMBINATION OF A RIGID BASE MEMBER HAVING A PASSAGEWAY THERETHROUGH FOR THE FREE PASSAGE OF THE LENGTH OF ROD; A RIGID LOAD-SUPPORTING MEMBER POSITIONED ABOVE SAID BASE MEMBER; MEANS FOR ATTACHING THE LENGTH OF ROD EXTENDING THROUGH SAID BASE MEMBER TO SAID LOAD-SUPPORTING MEMBER; SPRING MEANS EXTENDING VERTICALLY BETWEEN SAID BASE MEMBER AND SAID LOAD-SUPPORTING MEMBER TO SUPPORT SAID LOAD-SUPPORTING MEMBER AND THE ROD STRING FOR YIELDING MOVEMENT RELATIVE TO SAID BASE MEMBER IN RESPONSE TO FORCES APPLIED TO SAID BASE MEMBER FOR LIFTING SAID ROD STRING AND IN
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |