US4488520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve rocker assembly
Assignee: Ford Motor Co
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Filing: 1983-07-28
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Granted: 1984-12-18
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Expires: 2003-07-28
Abstract
Abstract An internal combustion engine having a rocker arm shaft pivotally mounting a number of rocker arms mounts the arms in pairs, the rocker arms of each pair straddling a pedestal supporting the shaft and being resiliently biased axially towards one another and against the pedestal by a one piece wire spring clip that resiliently surrounds and engages the rocker shaft and axially bears against the rocker arms.
Inventors
- 👤 Emil Almor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:27
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/46; F01L1/12; F01L1/18; F01L1/181; F01L2001/187
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A valve rocker assembly for an internal combustion engine comprising a rocker shaft, pedestals for mounting the rocker shaft on an engine cylinder head, rocker arms pivotally mounted on the rocker shaft such that a pair of rocker arms straddles each pedestal with each one of the pair of rocker arms contiguous thereto, and an axially extending one piece wire spring metal clip holding member resiliently removably mounted on the rocker shaft, the clip having a loop at each end resiliently circumferentially surrounding and engaging the rocker shaft, the loop being of a diameter slightly smaller than the diameter of the shaft to deform under an interference fit with the shaft upon assembly thereto for retaining the clip to the shaft, the clip having a central indented portion operably engageable in a mating groove in the pedestal for nonrotatably locating the clip relative to the rocker shaft, each clip acting on the contiguous rocker arms to position the rocker arms axially on the rocker shaft relative to the pedestal, each clip exerting a load in an axial direction on a respective rocker arm locating them axially against the pedestal.
Claim 2
Dependent Claim
189 words
A valve rocker assembly for an internal combustion engine comprising a rocker shaft, pedestals for mounting the rocker shaft on an engine cylinder head, rocker arms pivotally mounted on the rocker shaft such that a pair of rocker arms straddles each pedestal with each one of the pair of rocker arms contiguous thereto, and an axially extending one piece wire spring metal clip holding member resiliently removably mounted on the rocker shaft, the clip having a loop at each end resiliently circumferentially surrounding and engaging the rocker shaft, the loop being of a diameter slightly smaller than the diameter of the shaft to deform under an interference fit with the shaft upon assembly thereto for retaining the clip to the shaft, the clip having a central indented portion operably engageable in a mating groove in the pedestal for nonrotatably locating the clip relative to the rocker shaft, each clip acting on the contiguous rocker arms to position the rocker arms axially on the rocker shaft relative to the pedestal, each clip exerting a load in an axial direction on a respective rocker arm locating them axially against the pedestal.
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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |