Internal-combustion engines – Starting device – Mechanical
Patent
1984-03-02
1986-04-15
Dolinar, Andrew M.
Internal-combustion engines
Starting device
Mechanical
123179SE, 123185BA, 74 6, 74577SF, 185 39, 192 46, F02N 302
Patent
active
045820309
ABSTRACT:
A top mounting pull-rope recoil starter as might be employed on a vertical crankshaft small internal combustion engine for rotary lawnmower or similar applications. The pull-rope pulley connects to a ratchet wheel through a twist-lock coupling and the spring chamber formed within the ratchet wheel and pulley is sealed against dust by a rotating seal formed between the pulley and starter housing. The ratchet wheel is selectively engaged by engine flywheel supported pawls, which have integral leaf springs normally biasing them into engagement with the ratchet wheel. When the engine is running, however, the centrifugal force generated by the rotating flywheel on the pawls moves the pawls against the bias of the integral leaf springs out of engagement with the ratchet wheel. The blower housing and starter housing are coupled together by a twist lock arrangement, and securely fastened together by a fastener, such as a threaded screw or a rivet passing through the starter housing into the blower housing. The starter housing is made of a molded plastic and includes a flexible lower rim which fits around a rigid upper rim of the blower housing, the latter locating and reinforcing the starter housing rim.
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Dolinar Andrew M.
Hoffman John F.
Jeffers Albert L.
Tecumseh Products Company
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