Patent US4538560A successfully refreshed from Google Patents.
US4538560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine valve cover
Assignee: Individual
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Filing: 1984-05-30
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Granted: 1985-09-03
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Expires: 2004-05-30
Abstract
Abstract An improved internal combustion engine valve cover comprises a stamped metal, frusto-pyramidal main body portion having a bottom perforated flange, grooved upwardly tapering sides, and a planar top having an aperture therein. A clear synthetic "window" of plastic material is bolted to the top covering the aperture, and a suitable sealant is disposed between the "window" material and the metal top. The perforated flange has a dependent lip around its peripheral edge and the grooves in the tapered sides are associated with respective perforations in the flange.
Inventors
- 👤 Lawrence S. Alden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:18
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/006; F02F2007/0063; F05; F05C; F05C2225/00; F05C2225/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
An improved internal combustion engine valve cover comprising a metal main body portion having a generally rectangular form with sides that slope upwardly and inwardly from a planar outwardly extending bottom flange and that merge with a planar top having a coaxial generally rectangular aperture formed therein with edges thereof parallel and generally equally spaced from the sides of said form exposing substantially all of an interior of said cover, a generally rectangular corresponding oriented clear plastic window over said aperture that is secured inside said cover to said top by removable fasteners, a down-turned lip on the peripheral edge of said flange, a plurality of perforations in said flange, a plurality of grooves in the sides of said main body portion said grooves being associated with respective perforations in said flange, and means for sealing said plastic window to said top.
Claim 2
Dependent Claim
142 words
An improved internal combustion engine valve cover comprising a metal main body portion having a generally rectangular form with sides that slope upwardly and inwardly from a planar outwardly extending bottom flange and that merge with a planar top having a coaxial generally rectangular aperture formed therein with edges thereof parallel and generally equally spaced from the sides of said form exposing substantially all of an interior of said cover, a generally rectangular corresponding oriented clear plastic window over said aperture that is secured inside said cover to said top by removable fasteners, a down-turned lip on the peripheral edge of said flange, a plurality of perforations in said flange, a plurality of grooves in the sides of said main body portion said grooves being associated with respective perforations in said flange, and means for sealing said plastic window to said top.
Claim 3
Dependent Claim
18 words
The valve cover of claim 1 wherein said removable fasteners include Allen head bolts and nuts threaded thereon.
Claim 4
Dependent Claim
23 words
The valve cover of claim 1 wherein said sealing means includes a silicone preparation applied to said metal top and to said window.
References Cited (Backward Citations)
US30253A
Cited
US2269035A
Cited
FR1066415A
Cited
USRE30253E
Cited
USD244760S
Cited
US4027644A
Cited
US4195478A
Cited
US4388898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |