Quick adjust tappet assembly

Details Quick adjust tappet assembly Quick adjust tappet assembly

1990-07-25

1991-04-02

Okonsky, David A.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9052, F01L 114, F01L 120

Patent

active

050039407

ABSTRACT:
An inverted cup follower is fitted in a bore of the cylinder head of an internal combustion engine in line with the upright stem of an intake or exhaust valve. Such follower has a threaded central bore receiving a complementally threaded plug. The plug has a rectangular socket receiving the rectangular tongue of a cap member which is turnable so as to advance the plug toward or away from the valve stem and thereby adjust the valve clearance. To maintain a desired adjustment, a spring-loaded locking pin normally is received in any one of several closely spaced peripheral notches of the cap member so as to prevent rotation of the cap member relative to the inverted cup follower. The pin can be moved to an unlocked position to permit rotating adjustment of the cap member and the central plug.

REFERENCES:
patent: 1496497 (1924-06-01), Swarthout et al.
patent: 3002508 (1961-10-01), Barker et al.
patent: 3002509 (1961-10-01), Fitzgerald et al.
patent: 3120221 (1964-02-01), Lyons
patent: 3301239 (1967-01-01), Thauer
patent: 3413964 (1968-12-01), Pask
patent: 3675631 (1972-07-01), Hixson
patent: 3823698 (1974-07-01), Van Deberg
patent: 3941102 (1976-03-01), Bareham
patent: 4321894 (1982-03-01), Black
patent: 4469057 (1984-09-01), Black

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