Combustion engine having unitary structure of cooling fan...

Internal-combustion engines – Cooling – Automatic coolant flow control

Reexamination Certificate

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C123S185300

Reexamination Certificate

active

11159867

ABSTRACT:
A combustion engine according to the present invention has a unitary fan-pulley assembly (F), in which a cooling fan (8) and a starter pulley (9) are formed integrally with each other. The cooling fan (8) is fixed to a crankshaft (1). The pulley (9) receives a starting force when engaged with engagement pawls14bintegral with a recoil starter (14). A bracket (11) is fixedly mounted on the crankshaft (1) together with the unitary fan-pulley assembly (F) for urging engagement grooves (92), each defined between neighboring engagement projections (91) of the starter pulley (9), in an axial direction of the unitary fan-pulley assembly (F).

REFERENCES:
patent: 1789871 (1931-01-01), Knight
patent: 2620782 (1952-12-01), Stegeman
patent: 5065720 (1991-11-01), Nishiyama et al.
patent: 5066196 (1991-11-01), Morofushi
patent: 5230314 (1993-07-01), Kawahara et al.
patent: 6006703 (1999-12-01), Nakamura et al.
patent: 5-24921 (1993-02-01), None

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