Centrifugal clutch and brake for lawnmower

Details Centrifugal clutch and brake for lawnmower Centrifugal clutch and brake for lawnmower

1980-10-27

1983-01-25

Krizmanich, George H.

Harvesters

Motorized harvester

With selective control of drive means

192 18R, 192 8R, A01D 7500

Patent

active

043696163

ABSTRACT:
An apparatus which automatically prevents the rotation of a rotary blade or the like when a power plant is operating at idling speed and which drivingly engages the rotary blade when the power plant is driven at a predetermined speed which is greater than idling speed. The apparatus includes a housing having a generally frusto-conical portion and a brake shoe which engages a fixed brake band under spring pressure when the power plant is at idling speed and a plurality of weights which move outwardly by centrifugal action into engagement with the housing to move the housing away from the brake shoe and provide a drive connection to a rotary blade when the speed of rotation of the power plant is increased a predetermined amount.

REFERENCES:
patent: 3026665 (1962-03-01), Hoff
patent: 3058561 (1962-10-01), Spalding
patent: 3245505 (1966-04-01), Staengle et al.
patent: 3253391 (1966-05-01), Meldahl
patent: 3731472 (1973-05-01), Kamlukin
patent: 3871159 (1975-03-01), Shriver
patent: 3994376 (1976-11-01), Fulghnm
patent: 4035994 (1977-07-01), Hoff
patent: 4205737 (1980-05-01), Harkness et al.

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