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

1985-07-08

1986-12-30

Lazarus, Ira S.

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9055, F01L 124

Patent

active

046320750

ABSTRACT:
Hydraulic tappet essentially comprising a first cup member sliding in a seat; a second member sliding axially in relation to the first; a third annular member located inside the said first cup member and having a sleeve, inside the inner bore of which the said second member slides axially, and a ring projecting radially from the said sleeve and connected in fluidtight manner to the side wall on the said first cup member in such a manner as to form a first chamber for fluid under pressure; and a fourth annular member made of flexible material and located essentially inside the said first cup member and outside the said sleeve on the said third annular member in such a manner as to form a second activating fluid chamber connected hydraulically to the said first chamber over a duct with an on-off member.

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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