Internal-combustion engines – Poppet valve operating mechanism – Tappet
Patent
1987-02-10
1988-01-05
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
Tappet
123 9046, F01L 124
Patent
active
047168650
ABSTRACT:
An inner element for a hydraulic valve clearance compensation element for 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 cylindrical collar (13) 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 a peripheral groove (8) engaging positively the collar (13) of the restraining element (9) at at least some peripheral points, the restraining element (9) having one projection (11) at at least one peripheral point radially protruding beyond the outer diameter of cylindrical element (3), characterized in that the lengthwise region of collar (13) containing projections (11) engaging radially over the outer diameter of cylindrical element (3) and the lengthwise region of collar (13) engaging peripheral groove (8) of cylindrical element (3) lie axially behind one another without a mutual overlap.
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: 4621398 (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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