Engine cylinder head assembly having planar and cast components

Details Engine cylinder head assembly having planar and cast components Engine cylinder head assembly having planar and cast components

1996-01-22

1997-07-01

McMahon, Marguerite

Internal-combustion engines

Particular piston and enclosing cylinder construction

Cylinder head

1231933, F01M 910

Patent

active

056427018

ABSTRACT:
The cylinder head assembly includes a cast member, and a substantially planar member that is affixed to an upper end of the cast member. The substantially planar member includes apertures to anchor the intake and exhaust rocker studs, apertures that receive the intake and exhaust valve, and apertures that receive the push rod guides. The substantially planar member also has spring locators for the intake and exhaust valve return springs. The cast member is affixed to the engine cylinder, and includes cast intake and exhaust manifolds, bosses for receiving the intake and exhaust valves, a cast pocket for receiving the intake and exhaust push rods, and air cooling fins. A head cover is disposed on an opposite side of the planar member. The invention eliminates the need for two cast components.

REFERENCES:
patent: 1368522 (1921-02-01), Newcomb
patent: 1402695 (1922-01-01), Wall
patent: 2337577 (1943-12-01), Taylor
patent: 2492582 (1949-12-01), Klotsch et al.
patent: 2975778 (1961-03-01), Wilcox
patent: 3429303 (1969-02-01), Roberts
patent: 3949715 (1976-04-01), Falx et al.
patent: 4337736 (1982-07-01), Rasch et al.
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patent: 4694646 (1987-09-01), Holmstrom
patent: 5058542 (1991-10-01), Grayson et al.
patent: 5235942 (1993-08-01), Olmr
Tecumseh Two Piece OHV cylinder head, sold at least as early as Nov. 14, 1994, photos and sketch.

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