Sprocket assembly for chain saws

Details Sprocket assembly for chain saws Sprocket assembly for chain saws

1988-03-18

1989-10-31

Watts, Douglas D.

Cutlery

Cutting tools

Saw

30384, 474162, B23D 5702

Patent

active

048767964

ABSTRACT:
A sprocket assembly including a sprocket adapter driven by the motor of a chain saw. The adapter includes an adapter shaft which has a defined inner opening to fit around the drive shaft of the chain saw. A sprocket is mounted on the adapter shaft. Splines on the adapter shaft exterior fit into spline grooves of the sprocket. The thickness at the roots of the splines provide the strength to resist breakage. The exterior areas of the adapter shaft between the splines are flat landings which define relieved thickness areas between the splines and are aligned with tang-receiving pockets in the sprocket. The relieved areas permit an optimum sizing of the sprocket to the saw chain with sufficient pocket depth to fully receive the drive tangs of a saw chain. The sprocket rims are provided with mated inner edges that mate to the flat landings of the adapter shaft to facilitate transmission of the turning power from the drive shaft.

REFERENCES:
patent: 3144890 (1964-08-01), Irgens

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