Recoil starter

Internal-combustion engines – Starting device – Mechanical

Patent

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Details

F02N 302

Patent

active

056761031

ABSTRACT:
A recoil starter is provided which prevents malfunction, such as disengagement of a claw, after the engine is started repeatedly even if the starter is not made of a material of high intensity. A spring can be wound substantially precisely circularly. It is quite easy to mount a friction plate to the starter. Furthermore, this subassembly does not loosen after long-term usage. A rope guide can be easily mounted to the starter case, thus reducing the fabrication cost. The recoil starter can be placed and locked in position relative to a fan cover with high accuracy. When the ratchet is in its protruded position, the pivotal point of the ratchet is located radially inside a pulley around the position where the pulley engages the ratchet. A ratchet support portion is formed radially outside the pulley on the reel. The ratchet forms a beam supported at its both ends. The beam acts against a force exerted by the pulley due to a resistance produced when the engine is started. A cover is mounted at the top end of the support portion to prevent the ratchet from moving toward the top end of the ratchet. A cylindrical engaging portion is formed on the outer surface of the stem of the starter case. One end of the spring engages this engaging portion. A rope takeout port is formed in the outer surface of the case such that the rope is payed out while tilted upwardly from a horizontal plane. The rope guide made of a hard material and acting to guide the rope is fitted over the case between the rope takeout port and the reel.

REFERENCES:
patent: H517 (1988-09-01), Sato et al.
patent: 2848987 (1958-08-01), Morden
patent: 3375814 (1968-04-01), Hamman
patent: 4492190 (1985-01-01), Greenwood et al.

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