US3298337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve damping assembly
Assignee: Individual
•
Filing: 1964-11-17
•
Granted: 1967-01-17
•
Expires: 1984-11-17
Abstract
No abstract record available.
Inventors
- 👤 Thompson Marion Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:56
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/14; F01L1/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
161 words
IN AN INTERNAL COMBUSTION ENGINE WHICH INCLUDES A VALVE WITH A VALVE STEM; AN ENGINE HEAD HAVING MEANS DEFINING A VALVE STEM GUIDE WHICH RECIPROCABLY RECEIVES SAID VALVE STEM; MEANS ENGAGEABLE WITH SAID VALVE STEM AND OPERABLE TO MOVE SAID VALVE FROM A CLOSED POSITION TO A PREDETERMINED OPEN POSITION; VALVE SPRING RETAINING MEANS MOUNTED ON THE VALVE STEM; COMPRESSION SPRING MEANS INTERPOSED BETWEEN THE ENGINE HEAD AND THE VALVE SPRING RETAINING MEANS FOR BIASING THE VALVE TOWARD ITS CLOSED POSITION, THE IMPROVEMENT OF A VALVE DAMPING ASSEMBLY WHICH COMPRISES: FIRST SEAT MEANS DISPOSED ON THE ENGINE HEAD AND MADE OF THIN, RESILIENT MATERIAL FOR CUSHIONING THE ABUTMENT THEREON OF SAID COMPRESSION SPRING MEANS WITHOUT APPRECIABLY AFFECTING THE MAGNITUDE AND CHARACTER OF SAID BIASING; AND SECOND SEAT MEANS DISPOSED ON SAID VALVE SPRING RETAINING MEANS AND MADE OF THIN, RESILIENT MATERIAL FOR CUSHIONING THE ABUTMENT THEREON OF SAID COMPRESSION SPRING MEANS WITHOUT APPRECIABLY AFFECTING THE MAGNITUDE AND CHARACTER OF SAID BIASING.
Claim 2
Dependent Claim
161 words
IN AN INTERNAL COMBUSTION ENGINE WHICH INCLUDES A VALVE WITH A VALVE STEM; AN ENGINE HEAD HAVING MEANS DEFINING A VALVE STEM GUIDE WHICH RECIPROCABLY RECEIVES SAID VALVE STEM; MEANS ENGAGEABLE WITH SAID VALVE STEM AND OPERABLE TO MOVE SAID VALVE FROM A CLOSED POSITION TO A PREDETERMINED OPEN POSITION; VALVE SPRING RETAINING MEANS MOUNTED ON THE VALVE STEM; COMPRESSION SPRING MEANS INTERPOSED BETWEEN THE ENGINE HEAD AND THE VALVE SPRING RETAINING MEANS FOR BIASING THE VALVE TOWARD ITS CLOSED POSITION, THE IMPROVEMENT OF A VALVE DAMPING ASSEMBLY WHICH COMPRISES: FIRST SEAT MEANS DISPOSED ON THE ENGINE HEAD AND MADE OF THIN, RESILIENT MATERIAL FOR CUSHIONING THE ABUTMENT THEREON OF SAID COMPRESSION SPRING MEANS WITHOUT APPRECIABLY AFFECTING THE MAGNITUDE AND CHARACTER OF SAID BIASING; AND SECOND SEAT MEANS DISPOSED ON SAID VALVE SPRING RETAINING MEANS AND MADE OF THIN, RESILIENT MATERIAL FOR CUSHIONING THE ABUTMENT THEREON OF SAID COMPRESSION SPRING MEANS WITHOUT APPRECIABLY AFFECTING THE MAGNITUDE AND CHARACTER OF SAID BIASING.
Claim 3
Dependent Claim
67 words
A VALVE DAMPING ASSEMBLY ACCORDING TO CLAIM 1 AND INCLUDING RESILIENT MEANS DISPOSED ON THE VALVE STEM AND INTERPOSED BETWEEN THE ENGINE HEAD AND THE VALVE SPRING RETAINING MEANS FOR DAMPING MOVEMENT OF THE VALVE AT ITS OPEN POSITION, SAID RESILIENT MEANS BEING OF SUCH LENGTH THAT IT IS ENGAGED BY THE ENGINE HEAD AND THE VALVE SPRING RETAINING MEANS WHEN THE VALVE REACHES ITS OPEN POSITION.
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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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |