Cylinder head gasket with variable thickness fire ring

Details Cylinder head gasket with variable thickness fire ring Cylinder head gasket with variable thickness fire ring

1982-12-20

1984-11-06

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 1, 277217, F16J 1506

Patent

active

044808445

ABSTRACT:
A cylinder head gasket 10 includes a variable thickness fire ring 12 affixed to a cylinder aperture8 therein. The ring counteracts the tendency for load distribution in cylinder head areas to vary as a function of bolt spacing and the amount of load or clamping force applied to the cylinder head of an engine. The ring incorporates a thickness gradient determined by desirable unit load around the cylinder head areas. In a preferred embodiment, the ring has a minimum thickness "b" at a point most proximal to a bolt apertures 14, while having a maximum thickness "a" at a point equidistant from two adjacent bolt apertures 14. Also, in a preferred embodiment the variable thickness ring is chemically bonded to the cylinder aperture.

REFERENCES:
patent: 1928585 (1933-09-01), Balfe
patent: 2910333 (1959-10-01), Koehler
patent: 3473813 (1969-10-01), Meyers et al.
patent: 3606361 (1971-09-01), Pohl et al.
patent: 4121846 (1978-10-01), Skrycki

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