US3301241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-rotating roller tappet
Assignee: Individual
•
Filing: 1966-06-21
•
Granted: 1967-01-31
•
Expires: 1986-06-21
Abstract
No abstract record available.
Inventors
- 👤 Iskenderian Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:38
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/14; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2107; Y10T74/2142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN AN INTERNAL COMBUSTION ENGINE INCLUDING A CAMSHAFT HAVING CAM SURFACES, ROLLER TAPPETS RIDING ON SAID CAM SURFACES TO RECIPROCATE VALVE PUSHRODS, ROCKER ARMS AND OVERHEAD VALVES, IN A CYLINDER HEAD, CONSTRAINING MEANS FOR PREVENTING ROTATION OF SAID VALVE PUSHRODS AND SAID ROLLER TAPPETS, EACH CONSTRAINING MEANS COMPRISING: A RIGID FLAT PLATE ATTACHED TO SAID CYLINDER HEAD, SAID PLATE IN THE AREA OF SAID VALVE PUSHROD HAVING A SLOTTED OPENING TO GUIDABLY RECEIVE SAID PUSHROD; A VALVE PUSHROD, SAID VALVE PUSHROD HAVING UPPER FLATTED GUIDE MEANS TO SLIDEABLY ENGAGE SAID SLOTTED OPENINGS; THE LOWER END OF SAID VALVE PUSHROD BEING PROVIDED WITH LOWER FLATTED GUIDE MEANS ALIGNED WITH SAID UPPER GUIDE MEANS; A ROLLER TAPPET, SAID ROLLER TAPPET HAVING A UNITARY VALVE PUSHROD SOCKET PROVIDED WITH OPPOSED FLATS TO RECEIVE SAID LOWER GUIDE MEANS TO PREVENT LATERAL ROTATION OF SAID ROLLER TAPPET ON SAID CAM SURFACES.
Claim 2
Dependent Claim
146 words
IN AN INTERNAL COMBUSTION ENGINE INCLUDING A CAMSHAFT HAVING CAM SURFACES, ROLLER TAPPETS RIDING ON SAID CAM SURFACES TO RECIPROCATE VALVE PUSHRODS, ROCKER ARMS AND OVERHEAD VALVES, IN A CYLINDER HEAD, CONSTRAINING MEANS FOR PREVENTING ROTATION OF SAID VALVE PUSHRODS AND SAID ROLLER TAPPETS, EACH CONSTRAINING MEANS COMPRISING: A RIGID FLAT PLATE ATTACHED TO SAID CYLINDER HEAD, SAID PLATE IN THE AREA OF SAID VALVE PUSHROD HAVING A SLOTTED OPENING TO GUIDABLY RECEIVE SAID PUSHROD; A VALVE PUSHROD, SAID VALVE PUSHROD HAVING UPPER FLATTED GUIDE MEANS TO SLIDEABLY ENGAGE SAID SLOTTED OPENINGS; THE LOWER END OF SAID VALVE PUSHROD BEING PROVIDED WITH LOWER FLATTED GUIDE MEANS ALIGNED WITH SAID UPPER GUIDE MEANS; A ROLLER TAPPET, SAID ROLLER TAPPET HAVING A UNITARY VALVE PUSHROD SOCKET PROVIDED WITH OPPOSED FLATS TO RECEIVE SAID LOWER GUIDE MEANS TO PREVENT LATERAL ROTATION OF SAID ROLLER TAPPET ON SAID CAM SURFACES.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |