Chain saw having a braking arrangement

Details Chain saw having a braking arrangement Chain saw having a braking arrangement

1985-10-17

1987-05-05

Watts, Douglas D.

Cutlery

Cutting tools

Saw

188 77R, B60T 1304

Patent

active

046620729

ABSTRACT:
A chain saw is disclosed having a drive motor which drives the sprocket wheel of the saw chain via a transmission stage. The sprocket wheel rotates in the same direction as the drive shaft of the drive motor and drives the saw chain in such a manner that the portion thereof traversing the lower periphery of the cutter bar moves toward the housing of the chain saw. The saw chain is braked with a braking arrangement which develops a braking moment that causes the chain saw to develop a reaction moment that opposes the kickback moment occurring as a consequence of the kickback action. In this way, the angle through which the chain saw is deflected during kickback is reduced. In addition, a compact configuration of the motor housing of the chain saw is obtained wherein the braking arrangement is kept free of dirt and chips.

REFERENCES:
patent: 3837179 (1974-12-01), Haupt et al.
patent: 4310972 (1982-01-01), Isberg et al.

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