Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1987-02-20
1988-01-05
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9046, F01L 124
Patent
active
047168676
ABSTRACT:
An inner element for the hydraulic valve clearance compensation element for n internal combustion engine comprising a cylindrical element (3) closed on one end and a piston element (5) guided therein for longitudinal displacement and protruding beyond the open end of cylindrical element (3), the piston element (5) having a reduced outer diameter (6) in its protruding portion engaging a radial flange (10) of a restraining element (9) held by a collar (11) on the open end of cylindrical element (3), the open end of element (3) having also a reduced outer diameter (7) with an additional diameter reduction in the form of peripheral groove (8) engaging positively the collar (11) of the restraining element (9) at at least some peripheral points, the restraining element (9) having one projection (13) at at least one peripheral point radially protruding beyond the outer diameter of cylindrical element (3), characterized in that the collar (11) of restraining element (9) is provided in its initial stage at its end opposite to the radial flange (10) with an outer diameter (13) greater than the outer diameter of cylindrical element (3) in which area at least two indentations spaced about the circumference are provided at which the restraining element material is shaped into the peripheral groove (8) of the cylindrical element (3).
REFERENCES:
patent: 2941523 (1960-06-01), Bergmann
patent: 3358660 (1967-12-01), Cornell
patent: 3516393 (1970-06-01), Dadd
patent: 4227495 (1980-10-01), Krieg
patent: 4502428 (1985-03-01), Paar
patent: 4621598 (1986-11-01), Miura
patent: 4644913 (1987-02-01), Stoody
patent: 4644914 (1987-02-01), Morita et al.
Lazarus Ira S.
Motomak Motorenbau, Maschinen- und Werkzeugfabrik, Konstruktione
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