US3157166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable dwell and lift mechanism for valves
Assignee: Soroban Engineering Inc
•
Filing: 1962-07-30
•
Granted: 1964-11-17
•
Expires: 1982-07-30
Abstract
No abstract record available.
Inventors
- 👤 John H Macneill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:53
CPC Classifications
F; F01; F01L; F01L13/00; F01L13/0015; F01L13/0021; F01L2820/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/1828; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A VARIABLE DWELL AND LIFT MECHANISM FOR VALVES COMPRISING A VALVE, A VALVE STEM, A VALVE SEAT, MEANS FOR BIASING SAID VALVE INTO ENGAGEMENT WITH SAID VALVE SEAT, A VALVE ACTUATOR FOR ENGAGING SAID VALVE STEM AND MOVING SAID VALVE RELATIVE TO SAID VALVE SEAT, A TOGGLE COMPRISING A PAIR OF LINKS PIVOTALLY CONNECTED TOGETHER AT ONE END OF EACH, THE OTHER END OF A LINK OF SAID PAIR OF LINKS BEING PIVOTED ABOUT A PIVOT POINT ON SAID VALVE ACTUATOR, THE OTHER END OF ANOTHER OF SAID PAIR OF LINKS BEING PIVOTED
Claim 2
Dependent Claim
93 words
A VARIABLE DWELL AND LIFT MECHANISM FOR VALVES COMPRISING A VALVE, A VALVE STEM, A VALVE SEAT, MEANS FOR BIASING SAID VALVE INTO ENGAGEMENT WITH SAID VALVE SEAT, A VALVE ACTUATOR FOR ENGAGING SAID VALVE STEM AND MOVING SAID VALVE RELATIVE TO SAID VALVE SEAT, A TOGGLE COMPRISING A PAIR OF LINKS PIVOTALLY CONNECTED TOGETHER AT ONE END OF EACH, THE OTHER END OF A LINK OF SAID PAIR OF LINKS BEING PIVOTED ABOUT A PIVOT POINT ON SAID VALVE ACTUATOR, THE OTHER END OF ANOTHER OF SAID PAIR OF LINKS BEING PIVOTED
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |