Oiltight hydraulic tappet for controlling an internal combustion

Details Oiltight hydraulic tappet for controlling an internal combustion Oiltight hydraulic tappet for controlling an internal combustion

1985-11-25

1987-03-17

Lazarus, Ira S.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9055, F01L 124

Patent

active

046498753

ABSTRACT:
The hydraulic tappet comprises a cup-shaped body having a cylindrical side wall and a flat bottom wall, a piston element moving axially inside a cavity, formed in the said bottom wall and defining a first pressure chamber, an annular element of deformable material located on the outside of the said piston element and inside the said cylindrical wall, ducts for hydraulically connecting the said second chamber to the said first chamber and on which is fitted an on-off member, and a guide element moving axially inside the said cylindrical wall on the said cup-shaped body and having a side surface and a bottom wall.

REFERENCES:
patent: 2109815 (1938-03-01), Best
patent: 2833257 (1958-05-01), Lengnick
patent: 3495577 (1970-02-01), Collins
patent: 3521608 (1970-07-01), Scheibe
patent: 4397271 (1983-08-01), Gardner

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