Arrangement in a motor saw

Details Arrangement in a motor saw Arrangement in a motor saw

1985-06-17

1987-03-31

Schran, Donald R.

Cutlery

Cutting tools

Saw

123198DC, 123417, 30381, 83DIG1, B27G 1900

Patent

active

046531890

ABSTRACT:
An electro-mechanical brake in a motor saw requires electric energy for the operation of the brake. This energy can, according to the invention, be surplus energy in the ignition system of the saw. Surplus energy exists usually only when the r.p.m. exceeds a certain value. A capacitor is charged by current from the system and is prepared to discharge through a coil to actuate the brake on a signal from a kickback sensor.

REFERENCES:
patent: 3964461 (1976-06-01), Wesemeyer et al.
patent: 4152833 (1979-05-01), Phillips
patent: 4553517 (1985-11-01), Andreasson

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