Semi-self-contained hydraulic lash adjuster

Details Semi-self-contained hydraulic lash adjuster Semi-self-contained hydraulic lash adjuster

1981-03-02

1983-08-09

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9058, F01L 124

Patent

active

043972713

ABSTRACT:
A semi-self-contained hydraulic lash adjuster includes a generally cylindrical cup-shaped follower which will be positioned with the open side down, defining a chamber within the follower. A body is positioned axially within the chamber and is supported by a spacer whose periphery is attached to the follower. A plunger is reciprocally movable within the body and a high pressure chamber is defined between the plunger and body. A check valve in the plunger controls fluid access into the high pressure chamber. A diaphragm-type seal is peripherally attached to the body and is in sealing engagement with an internal surface of the follower. Fluid is positioned within the reservoir defined by the seal, which fluid is in communication with the high pressure chamber through the check valve.

REFERENCES:
patent: 2109815 (1938-03-01), Best
patent: 2213195 (1940-09-01), Banker
patent: 2752903 (1956-07-01), Banker
patent: 2908260 (1959-10-01), Bergmann
patent: 3476093 (1969-11-01), Line
patent: 3495577 (1970-02-01), Collins

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