Patent US2789787A successfully refreshed from Google Patents.
Patent US3754539A successfully refreshed from Google Patents.
US3754539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine rocker arm stabilizer
Assignee: Individual
•
Filing: 1972-06-29
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Granted: 1973-08-28
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Expires: 1992-06-29
Abstract
Abstract Device for use with a conventional engine rocker arm of the type pivoted between its ends by a spherical wall on the rocker arm, supported by a ball support on the engine, characterized by a spring urged member engaging the spherical wall, and maintaining it in stablized engagement with the ball support.
Inventors
- 👤 J Bandimere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:51
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: 8
Claim 1
Independent Claim
182 words
Apparatus for use with an engine of the valve-in-head type having an oscillatable valve actuating rocker arm with a pivotal portion between the ends thereof, said portion being formed by a wall of substantially uniform thickness, forming an inner concave spherical surface and an outer convex spherical surface, the inner spherical surface adapted to engage a ball support affixed to the engine by a stud, said wall also having an elongated slot extending therethrough and surrounding said stud for permitting the rocker arm to oscillate relative to the ball support and the stud, comprising; a. a cup-shaped member having a concave spherical surface adapted to engage said outer convex spherical surface, b. said member having an aperture extending therethrough for surrounding said stud and engageable therewith to prevent oscillation thereof relative to the rocker arm, and c. a spring for urging the concave spherical surface of the cupshaped member into engagement with the outer convex spherical surface on the rocker arm, providing frictional resistance therebetween and maintaining the inner concave spherical surface on the rocker arm in engagement with the ball support.
Claim 2
Dependent Claim
182 words
Apparatus for use with an engine of the valve-in-head type having an oscillatable valve actuating rocker arm with a pivotal portion between the ends thereof, said portion being formed by a wall of substantially uniform thickness, forming an inner concave spherical surface and an outer convex spherical surface, the inner spherical surface adapted to engage a ball support affixed to the engine by a stud, said wall also having an elongated slot extending therethrough and surrounding said stud for permitting the rocker arm to oscillate relative to the ball support and the stud, comprising; a. a cup-shaped member having a concave spherical surface adapted to engage said outer convex spherical surface, b. said member having an aperture extending therethrough for surrounding said stud and engageable therewith to prevent oscillation thereof relative to the rocker arm, and c. a spring for urging the concave spherical surface of the cupshaped member into engagement with the outer convex spherical surface on the rocker arm, providing frictional resistance therebetween and maintaining the inner concave spherical surface on the rocker arm in engagement with the ball support.
Claim 3
Dependent Claim
77 words
Apparatus in accordance with claim 1 wherein said spring is of the conical type adapted to surround said stud and having a larger diameter convolution at one end than at the other, said cup-shaped member being circular and having a circular shoulder adjacent its periPhery, said larger convolution adapted to seat on said shoulder and prevent relative radial movement between the cup-shaped member and said larger convolution, thereby retaining the cup-shaped member and spring in axial alignment.
Claim 4
Dependent Claim
34 words
Apparatus in accordance with claim 2 wherein a smaller convolution at the other end of the spring is adapted to abut the engine cylinder head at a locus adjacent where the stud projects therefrom.
Claim 5
Dependent Claim
23 words
Apparatus in accordance with claim 3 wherein said locus is a boss projecting from the engine head to which the stud is affixed.
Claim 6
Dependent Claim
12 words
Apparatus in accordance with claim 1 in combination with said rocker arm.
Claim 7
Dependent Claim
36 words
Apparatus in accordance with claim 5 in combination with a valve adapted to be opened by one end of the rocker arm and a push rod adapted to actuate the other end of the rocker arm.
Claim 8
Dependent Claim
149 words
Apparatus in accordance with claim 6 wherein the actuating end of the push rod is ball shaped and engages a corresponding socket in the rocker arm, said push rod being hollow and through which pressurized oil is delivered between its ball-shaped end and the rocker arm socket engaged thereby, producing a discrete oil cushion therebetween adapted to be partially squeezed therefrom as the push rod reduces the accumulated clearance in the system, said cup-shaped member and said spring providing a frictional force on the rocker arm tending to maintain said inner spherical surface in contact with said ball support and the valve actuating end of the rocker arm in contact with the end of a valve stem actuated thereby, whereby the principal impact on the rocker arm during clearance take-up occurs at said oil cushion, thereby reducing impact at said valve actuating end tending to wear a cavity therein.
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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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |