US4793295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retainer for a hydraulic lash adjuster
Assignee: Precision Engine Products Corp
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Filing: 1984-11-08
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Granted: 1988-12-27
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Expires: 2004-11-08
Abstract
Abstract A hydraulic lash adjuster has a generally cylindrical, hollow body having a closed end, an open end and a top land at the open end. A plunger is positioned in the body and is held in place by a retainer. The retainer is fastened to the exterior of the body. The retainer has a rim supported on the top land of the body and is held in place by tabs which are folded under into grooves in the side of the body.
Inventors
- 👤 Todd R. Downing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:17
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/20; F01L1/22; F01L1/24; F01L1/245; F01L1/255; F01L1/12; F01L1/14; F01L2305/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
A hydraulic roller tappet, comprising a generally cylindrical, hollow body having an open end and a top land at the open end, a plunger positioned in the body, a roller mounted for rotation in the body opposite the open end, non-rotation means formed on the body for maintaining proper orientation of the roller including at least one flat formed on the exterior of the body, and a retainer for holding the plunger in the body, the retainer comprising a rim held on the top land by tabs which engage the exterior of the body, the rim being engageable with the plunger, said tabs being circumferentially spaced from said non-rotation flat.
Claim 2
Dependent Claim
110 words
A hydraulic roller tappet, comprising a generally cylindrical, hollow body having an open end and a top land at the open end, a plunger positioned in the body, a roller mounted for rotation in the body opposite the open end, non-rotation means formed on the body for maintaining proper orientation of the roller including at least one flat formed on the exterior of the body, and a retainer for holding the plunger in the body, the retainer comprising a rim held on the top land by tabs which engage the exterior of the body, the rim being engageable with the plunger, said tabs being circumferentially spaced from said non-rotation flat.
Claim 3
Dependent Claim
29 words
The structure of claim 17 further comprising recesses on the outside of the body accommodating the tabs such that the tabs reside within the outside diameter of the body.
Claim 4
Dependent Claim
21 words
The structure of claim 2 further comprising slots cut in the recesses, the tabs being folded under to engage the slots.
Claim 5
Dependent Claim
65 words
The structure of claim 1 wherein the non-rotation means comprises two opposed flats formed on the exterior of the body and further comprising two arcuate, opposed recesses extending partially around the outside of the body from one flat to the other, the recesses accommodating the tabs such that the tabs reside within the arc of the recesses and within the outside diameter of the body.
References Cited (Backward Citations)
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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) | 1991-12-27 | 1992-06-27 | 1992-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-27 | 1996-06-27 | 1996-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-27 | 2000-06-27 | 2000-12-27 | $7700.00 | Window Closed / Lapsed |