Centrifugally controlled differential tape reel brake

Details Centrifugally controlled differential tape reel brake Centrifugally controlled differential tape reel brake

1983-03-21

1983-11-22

Levy, Stuart S.

Brakes

Operators

Speed-responsive

188171, 242 7547, 2421562, B65H 2306, B60T 1306

Patent

active

044163550

ABSTRACT:
A centrifugally controlled differential brake uses a plurality of disc brake pads which are urged against a non-rotating braking surface. The disc brake pads are each slidably mounted on a respective one of a plurality of first support rods and spring loaded to a position at one end of the corresponding rods. The other ends of the plurality of support rods are attached to a hub on which the rods are radially arranged and equally spaced. The hub is connected to a shaft to which a braking torque is to be applied. Each of the brake discs is connected by a connecting link to a respective one of a plurality of centrifugal weights which are each slidably mounted on a respective one of a plurality of second support rods. The second support rods are radially attached to the hub and equally spaced with each of the second rods being aligned diametrically opposite a respective one of the first rods. Thus, the springs urge the brake discs to an outer diameter position while the centrifugal weights are correspondingly positioned at an inner diameter position. During a rotation of the shaft, hub and first and second rods, a movement of the centrifugal weights on their respective second support rods counteracts the effect of the springs to urge the brake discs toward an inner diameter position in proportion to the rotational speed to vary the braking effect by a variation in the length of the torque arm of the brake disc.

REFERENCES:
patent: 1067454 (1913-07-01), Atwood
patent: 2217464 (1940-10-01), Arnold

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