Internal-combustion engines – Valve – Valve head cooperates with manifold
Patent
1987-06-12
1989-06-13
Wolfe, Willis R.
Internal-combustion engines
Valve
Valve head cooperates with manifold
123 9067, F01L 310
Patent
active
048382183
ABSTRACT:
A ceramic valve supporting structure for use in an internal combustion engine comprising: a ceramic valve having an integral stem, an upper portion of which is provided with a circular groove therearound; a frusto-conical shaped cotter comprising a pair of semi-cylindrical pieces, each inner surface of which has a lock projection located within said groove when secured to an outer surface of said stem; an annular retainer secured to an outer surface of said cotter to support said valve through said cotter, said retainer having an inner surface tapered to engage the outer surface of said cotter by wedging action due to a spring force acting upon to said retainer to bring said cotter into tight engagement with said stem; and an elastic layer provided between an inner surface of said cotter and the outer surface of said stem to absorb stress when said cotter engages said stem.
REFERENCES:
patent: 2633111 (1953-03-01), Pielstick
patent: 3265053 (1966-08-01), Fitzsimmons
patent: 3938484 (1976-02-01), Mueller
patent: 4180030 (1979-12-01), McWhirter
patent: 4359022 (1982-11-01), Nakamura et al.
Kagawa Junichi
Kawamura Mitsuyoshi
Nagasaki Shigeru
Sato Yasushi
Taniguchi Masato
Macy M.
NGK Spark Plug Co. Ltd.
Wolfe Willis R.
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