Crankshaft assembly for an engine of a portable tool

Details Crankshaft assembly for an engine of a portable tool Crankshaft assembly for an engine of a portable tool

1985-08-02

1986-09-09

Dority, Jr., Carroll B.

Internal-combustion engines

Frame construction

Horizontal cylinder

123195C, 92169, F02F 700

Patent

active

046102299

ABSTRACT:
A portable tool such as a motor-driven chain saw is disclosed which includes a cylinder, a piston, a connecting rod and a crankshaft. The crankshaft is rotatably journalled in crankshaft bearings and a crankcase made of plastic is provided. The bearing shells of the crankshaft bearings are releasably connected only to the cylinder and independently of the plastic crankcase. The plastic crankcase is likewise attached to the cylinder in such a manner that a housing arrangement is provided which is free of transmitted forces and is fully independent of the crankshaft bearings.

REFERENCES:
patent: 4434756 (1984-03-01), Nilsson et al.

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