Electric chain saw speed reduction device

Details Electric chain saw speed reduction device Electric chain saw speed reduction device

1984-06-01

1986-04-22

Watts, Douglas D.

Cutlery

Cutting tools

Saw

B27B 1702

Patent

active

045832919

ABSTRACT:
An improved speed reduction drive for an electric chain saw is disclosed. The speed reduction drive comprises a first rotatable member directly driven by the drive shaft of the electric motor for rotation therewith. A second rotatable member is connected to the drive sprocket for the cutter chain for rotation in the same direction. At least one endless drive loop drivingly connects the first and second rotatable members for rotation in the same direction, whereby rotational inertia of the electric motor opposes "kickback" of the chain saw.

REFERENCES:
patent: 962342 (1910-06-01), Harrell
patent: 1341470 (1920-05-01), Kinnaird
patent: 1634438 (1927-07-01), Spreen
patent: 3634814 (1972-04-01), Richmond
patent: 3738187 (1973-06-01), Hissrich
patent: 3857179 (1974-12-01), Haupt et al.
patent: 4028964 (1977-06-01), Jones
patent: 4324045 (1982-04-01), Hoppner et al.

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