Patent US4821699A successfully refreshed from Google Patents.
US4821699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure distribution device for valve cover
Assignee: Individual
•
Filing: 1988-02-08
•
Granted: 1989-04-18
•
Expires: 2008-02-08
Abstract
Abstract A pressure distributing device foe an engine valve cover is described which is adapted to fit around a valve cove and to act against the valve cover attachment flange to evenly distribute torquing pressure over the valve cover and the valve cover gasket. The device consists of an annular, substantially rigid body having a plan configuration which corresponds to the valve cover. The body fits over the valve cover body and acts against the valve cover attachement flange to distribute torquing pressure thereover.
Inventors
- 👤 Alan Mackin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:14
CPC Classifications
F; F02; F02F; F02F7/00; F02F7/006; F02B; F02B77/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
A valve cover assembly for attachment to the head of an internal combustion engine, said assembly consisting of a valve cover body, an attachment flange extending about said valve cover body, said flange including a rigid reinforcing member which extends about said valve cover body to define a lower face for contact with a valve cover gasket and bolt passages corresponding to threaded seats in said head extending from through said reinforcing member and opening at said lower face for affixing said valve cover assembly to the head of said internal combustion engine.
Claim 2
Dependent Claim
93 words
A valve cover assembly for attachment to the head of an internal combustion engine, said assembly consisting of a valve cover body, an attachment flange extending about said valve cover body, said flange including a rigid reinforcing member which extends about said valve cover body to define a lower face for contact with a valve cover gasket and bolt passages corresponding to threaded seats in said head extending from through said reinforcing member and opening at said lower face for affixing said valve cover assembly to the head of said internal combustion engine.
Claim 3
Independent Claim
185 words
A device for evenly distributing clamping pressure over a valve cover for an internal combustion engine, said valve cover having an attachment flange extending thereabout, said attachment flange being provided with openings which correspond to threaded openings in a block of an internal combustion engine through which extend bolts by which said valve cover is attached to said block, said device comprising; an annular, substantially rigid body defining an upper surface and a planer lower surface, said planer lower surface disposed about said valve cover and overlaying said attachment flange of said valve cover, said body including bolt passages extending therethrough and opening at said upper and said lower surfaces, said bolt passages corresponding in position and number to said openings on said attachment flange of said valve cover, said body cross section at said bolt passages being thickened with respect to the body cross section intermediate said bolt passages; whereby said planer lower surface of said annular body acts against said attachment flange of said valve cover responsive to the down torquing of said bolts to evenly distribute clamping pressure about said attachment flange.
Claim 4
Independent Claim
185 words
A device for evenly distributing clamping pressure over a valve cover for an internal combustion engine, said valve cover having an attachment flange extending thereabout, said attachment flange being provided with openings which correspond to threaded openings in a block of an internal combustion engine through which extend bolts by which said valve cover is attached to said block, said device comprising; an annular, substantially rigid body defining an upper surface and a planer lower surface, said planer lower surface disposed about said valve cover and overlaying said attachment flange of said valve cover, said body including bolt passages extending therethrough and opening at said upper and said lower surfaces, said bolt passages corresponding in position and number to said openings on said attachment flange of said valve cover, said body cross section at said bolt passages being thickened with respect to the body cross section intermediate said bolt passages; whereby said planer lower surface of said annular body acts against said attachment flange of said valve cover responsive to the down torquing of said bolts to evenly distribute clamping pressure about said attachment flange.
Claim 5
Dependent Claim
24 words
The device of claim 2 wherein said annular body in plan corresponds to the plan shape of said attachment flange of said valve cover.
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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |