Hydraulic tappet

Details Hydraulic tappet Hydraulic tappet

1979-09-26

1981-09-29

Feinberg, Craig R.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9055, 123 906, F01L 114, F01L 124

Patent

active

042916526

ABSTRACT:
A hydraulic tappet includes a tubular cylinder sideable within a bore of a housing, a piston with a reservoir slideably mounted within the tubular cylinder, a lower piston spring biased away from the piston with the reservoir forming a pressure chamber therebetween. The reservoir being in open communication with pressure oil ports and the pressure chamber selectively being closed or open to said reservoir. The closing or opening of the pressure chamber being controlled by the lower piston and cylinder riding on tracks of a cam which control the relative position of the cylinder and lower piston.

REFERENCES:
patent: 2010167 (1935-08-01), Tibbetts
patent: 2966151 (1960-12-01), Wood
patent: 3385274 (1968-05-01), Shunta et al.
patent: 3875910 (1975-04-01), Zink
patent: 4152953 (1979-05-01), Headley

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