Pre-timed distribution unit, in particular for internal combusti

Details Pre-timed distribution unit, in particular for internal combusti Pre-timed distribution unit, in particular for internal combusti

1988-04-26

1989-11-14

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Camshaft drive means

474140, F01L 102, F16H 706

Patent

active

048799777

ABSTRACT:
The pre-timed distribution unit, in particular for internal combustion engines, is constituted by a first sprocket wheel, and a second sprocket wheel with a plurality of sprocket sets, a multiple-link chain taut between said sprocket wheels and defining a space inside which a guide shoe is housed, which is constituted by at least a plate-shaped structure provided with guides radiused by a first and a second mating, trueing circumferential edges. In an alternative form of practical embodiment, the unit comprises a guide shoe whose guides are associated with enlarged, laterally protruding portions.

REFERENCES:
patent: 2489772 (1949-11-01), Hall
patent: 2526173 (1950-10-01), Thomassin
patent: 4193314 (1980-03-01), Horner et al.
patent: 4607601 (1986-08-01), Kohler
patent: 4642073 (1987-02-01), Restelli
patent: 4723517 (1988-02-01), Frost
patent: 4729348 (1988-03-01), Okada et al.

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