Patent US3112740A successfully refreshed from Google Patents.
US3112740A
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US
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Valve rocker arm with cylindrical support
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-09-28
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Granted: 1963-12-03
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Expires: 1981-09-28
Abstract
No abstract record available.
Inventors
- 👤 Sampietro Achilles Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:22
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/12; F01L1/18; F01L1/181; F01L1/182; F01L1/183; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A VALVE OPERATING MECHANISM, A SHAPED ONE-PIECE UNITARY PIVOTAL ROCKER ARM HAVING A DOWNWARDLY FACING SURFACE AT ONE END ACTING ON A VALVE AND A DOWNWARDLY FACING SURFACE AT THE OTHER END FOR BEING ACTED ON BY A ROCKER ARM OPERATOR, UPWARDLY EXTENDING CONTINUOUS SIDE WALLS EXTENDING LONGITUDINALLY ALONG THE SIDES OF THE ARM, A LATERALLY EXTENDING UPWARDLY FACING CONCAVE FRAGMENTARY CYLINDRICAL BEARING SURFACE BETWEEN SAID WALLS, A BEARING HAVING A DOWNWARDLY FACING CYLINDRICALLY SHAPED CONVEX SURFACE IN ENGAGEMENT WITH SAID ARM BEARING SURFACE, AND MEANS FOR SUPPORTING SAID BEARING AND ADJUSTING ITS VERTICAL POSITION AND HOLDING IT IN A FIXED PRE-DETERMINED ANGULAR POSITION PREVENTING ROTATION ON A VERTICAL AXIS TO MAINTAIN THE ROCKER ARM IN ITS PIVOTAL PLANE OF ACTION.
Claim 2
Dependent Claim
122 words
IN A VALVE OPERATING MECHANISM, A SHAPED ONE-PIECE UNITARY PIVOTAL ROCKER ARM HAVING A DOWNWARDLY FACING SURFACE AT ONE END ACTING ON A VALVE AND A DOWNWARDLY FACING SURFACE AT THE OTHER END FOR BEING ACTED ON BY A ROCKER ARM OPERATOR, UPWARDLY EXTENDING CONTINUOUS SIDE WALLS EXTENDING LONGITUDINALLY ALONG THE SIDES OF THE ARM, A LATERALLY EXTENDING UPWARDLY FACING CONCAVE FRAGMENTARY CYLINDRICAL BEARING SURFACE BETWEEN SAID WALLS, A BEARING HAVING A DOWNWARDLY FACING CYLINDRICALLY SHAPED CONVEX SURFACE IN ENGAGEMENT WITH SAID ARM BEARING SURFACE, AND MEANS FOR SUPPORTING SAID BEARING AND ADJUSTING ITS VERTICAL POSITION AND HOLDING IT IN A FIXED PRE-DETERMINED ANGULAR POSITION PREVENTING ROTATION ON A VERTICAL AXIS TO MAINTAIN THE ROCKER ARM IN ITS PIVOTAL PLANE OF ACTION.
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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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |