Drum brake torsion/compression strut spring

Details Drum brake torsion/compression strut spring Drum brake torsion/compression strut spring

1991-10-15

1992-12-01

Halvosa, George E. A.

Brakes

Wheel

Transversely movable

188106A, 188106F, 188331, 267155, 267275, F16D 5122

Patent

active

051673045

ABSTRACT:
The torsion/compression strut spring (60) is disposed about a forked end (54) of a parking brake strut (50) in a drum brake (10). The forked end (54) is received loosely about the web (12A) of an associated drum brake shoe (12) and a parking brake lever (40). The web includes a generally U-shaped recess portion (12B) which is sized to seat fixedly one oval-shaped end portion (64) of the spring. The spring (60) has oppositely disposed oval-shaped end portions (62, 64) which, in a disassembled and at-rest position, have longitudinal centerlines located 90.degree. apart relative to one another. When the spring (60) is assembled on the parking brake strut (50), the one end portion (64) seats fixedly within the recess portion (12B) and the other end (62) engages the strut (50) so that the spring (60) exerts a torsional force upon the strut (50) and causes legs (53, 56) of both forked ends (52, 54 ) of the strut (50) to engage respective sides of the parking brake lever (40) and drum brake shoe web (12A). The spring (60) also biases the strut (50) toward the parking brake lever (40) in order to maintain a rattle free engagement therewith.

REFERENCES:
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patent: 4397453 (1983-08-01), Seecamp
patent: 4828235 (1989-05-01), Paggeot
patent: 4880207 (1989-11-01), Matsumoto et al.

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