Brakes – Operators – Speed-responsive
Patent
1996-01-16
1997-12-16
Oberleitner, Robert J.
Brakes
Operators
Speed-responsive
188 827, B60T 712
Patent
active
056974760
ABSTRACT:
A pair of pawl assemblies is mounted on a shaft. Each pawl assembly includes a pawl, an arm and a hub. The arm is attached to the hub by a pivot, and a spring biases the arm toward the hub. The pawl attaches to the end of the arm, and the surface of the pawl has several teeth pointed in the direction of rotation. A brake drum made of two halves is bolted together around the shaft and pawl assemblies. The inner surface of the drum has teeth designed to mesh with the teeth on the pawls. A brake lining band fits around the brake drum in a groove formed along the circumference of the brake drum. The brake lining band attaches to adjustable mounting hardware, which is secured to a fixed surface. When the rotational speed of the shaft exceeds a safe level, the teeth on the pawls engage the teeth in the brake drum, causing the drum to turn against the brake lining band. The friction of turning the drum slows the shaft to a full stop. The teeth in the pawls and brake drum are designed to keep the pawls and the drum engaged even after the shaft stops rotating. A small reverse rotation of the shaft disengages the pawls from the brake drum.
REFERENCES:
patent: 3313330 (1967-04-01), Hoch et al.
patent: 3799296 (1974-03-01), Lester
patent: 4015696 (1977-04-01), Lichti
patent: 4282953 (1981-08-01), Lichti et al.
patent: 4372430 (1983-02-01), Borugian
patent: 4448290 (1984-05-01), Reid, Jr. et al.
patent: 4582179 (1986-04-01), Nelson
patent: 4907679 (1990-03-01), Menke
patent: 5060758 (1991-10-01), Ishioka
patent: 5127631 (1992-07-01), Flaig
patent: 5203392 (1993-04-01), Shea
patent: 5310028 (1994-05-01), Sampson
Kelly H. Dennis
Lipka Pamela J.
Oberleitner Robert J.
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