Shoe hold-down spring for a drum brake

Details Shoe hold-down spring for a drum brake Shoe hold-down spring for a drum brake

1977-09-06

1979-02-27

Kazenske, Edward R.

Brakes

Wheel

Transversely movable

F16D 5118

Patent

active

041414373

ABSTRACT:
A drum brake includes a backing plate for supporting a pair of brake shoes and a hydraulic actuator is operable to move the pair of brake shoes into a braking position. A coil spring and a finger cooperate to juxtaposition one of the pair of brake shoes adjacent to the backing plate. The coil spring includes end projections that are biased against the one brake shoe and an intermediate portion of the coil spring forms a loop which releasably locks with a hook on the finger to yieldably maintain the one brake shoe adjacent to the backing plate. The loop and finger cooperate to form an abutment which limits the separation between the one brake shoe and the backing plate.

REFERENCES:
patent: 2263949 (1941-11-01), Harle
patent: 2351114 (1944-06-01), Freeman
patent: 2557820 (1951-06-01), Frank
patent: 2609212 (1952-09-01), McMurtrie
patent: 2796954 (1957-06-01), Kaiser
patent: 3308909 (1967-03-01), Johannesen
patent: 3869027 (1975-03-01), Chlebowski
patent: 4055237 (1977-10-01), Numazawa et al.

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