US3272189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camshaft for internal combustion engine valve gear
Assignee: Eaton Corp
•
Filing: 1965-05-03
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Granted: 1966-09-13
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Michael C Turkish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:36
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/02; F01L1/04; F01L1/08; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
126 words
IN A VALVE GEAR FOR AN INTERNAL COMBUSTION ENGINE, INCLUDING A CAMSHAFT HAVING A PLURALITY OF CAMS BETWEEN A BEARING SPAN, SAID CAMS HAVING DIFFERENT LOBE POSITIONS SO THAT VALVES CONTROLLED BY SAID CAMS OPEN AND CLOSE IN SEQUENCE, AND THE COMSHAFT IS OF A NATURE THAT VALVE SPRING LOADS SEQUENTIALLY IMPOSED ON ADJACENT CAMS ARE EFFECTIVE TO PRODUCE DEFLECTIONS ON THE CAMSHAFT AND CAM AND THUS PRODUCE MECHANICAL INTERACTION BETWEEN THE VALVES CONTROLLED BY SAID CAMS, THE IMPROVEMENT OF PROFILED HEEL ON EACH OF THE CAMS, EACH SAID HEEL INCLUDING A DEPRESSED PORTION TO COMPENSATE FOR VALVE FORCE RESULTING FROM CAMSHAFT DEFLECTION REMOVAL DURING THE INTERVAL WHEN THE UNDERCUT PROFILE PORTION IS OPERABLE AND MAINTAINS THE VALVE ASSOCIATED WITH THAT CAM IN A CLOSED POSITION.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |