US3254637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve actuator
Assignee: Individual
•
Filing: 1962-10-03
•
Granted: 1966-06-07
•
Expires: 1982-10-03
Abstract
No abstract record available.
Inventors
- 👤 Roger O Durham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:43
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/30; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A DESMODROMIC WAVE ACTUATOR LINKAGE CONNECTING A ROCKER ARM TO A VALVE STEM, THE COMBINATION OF A PAIR OF WASHERS, MEANS FOR FIXING THE LONGITUDIANL POSITION OF SAID WASHERS WITH RESPECT TO SAID VALVE STEM AND FOR HOLDING SAID WASHERS AGAINST OPPOSITLELY DIRECTED SURFACES OF SAID ROCKER ARM SO AS TO PERMIT THE LATERAL MOVEMENT OF THE WASHERS WITH RESPCT TO THE VASLVE STEM, SAID WASHERS EACH HAVING A SURFACE IN MATING CONTACT WITH ONE OF SAID OPPOISTELY DIRECTED SURFACES OF THE ROCKER ARM, SAID MATING SURFACES BEING A PARTI-CIRCULAR RECESS FORMED IN ONE OF SAID SURFACES, AND A COMPLEMENTARY MATING FACE FORMED ON THE OTHER OF SAID SURFACES.
Claim 2
Dependent Claim
110 words
IN A DESMODROMIC WAVE ACTUATOR LINKAGE CONNECTING A ROCKER ARM TO A VALVE STEM, THE COMBINATION OF A PAIR OF WASHERS, MEANS FOR FIXING THE LONGITUDIANL POSITION OF SAID WASHERS WITH RESPECT TO SAID VALVE STEM AND FOR HOLDING SAID WASHERS AGAINST OPPOSITLELY DIRECTED SURFACES OF SAID ROCKER ARM SO AS TO PERMIT THE LATERAL MOVEMENT OF THE WASHERS WITH RESPCT TO THE VASLVE STEM, SAID WASHERS EACH HAVING A SURFACE IN MATING CONTACT WITH ONE OF SAID OPPOISTELY DIRECTED SURFACES OF THE ROCKER ARM, SAID MATING SURFACES BEING A PARTI-CIRCULAR RECESS FORMED IN ONE OF SAID SURFACES, AND A COMPLEMENTARY MATING FACE FORMED ON THE OTHER OF SAID SURFACES.
References Cited (Backward Citations)
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Cited
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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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |