Apparatus and method for lessening the accumulation of high...

Details Apparatus and method for lessening the accumulation of high... Apparatus and method for lessening the accumulation of high...

2006-09-12

2006-09-12

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Valve

Guide, lubricant, or coolant

Reexamination Certificate

active

07104238

ABSTRACT:
An intake valve for a combustion engine having an intake port is disclosed. The intake includes a valve guide having an end proximate the intake port, a valve shield extending from the end of the valve guide and into the intake port, and a valve stem arranged proximate the valve guide and valve shield. The valve guide and valve stem define a first clearance dimension therebetween, and the valve shield and value stem define a second clearance dimension therebetween, wherein the second clearance dimension is equal to or greater than the first clearance dimension.

REFERENCES:
patent: 4968321 (1990-11-01), Sung et al.
patent: 5592913 (1997-01-01), Matthews
patent: 5662078 (1997-09-01), Adegawa
patent: 5951723 (1999-09-01), Eberhard
patent: 6348075 (2002-02-01), Jakcson
patent: 3216820 (1982-12-01), None

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