Drum brake assembly

Details Drum brake assembly Drum brake assembly

2006-09-12

2006-09-12

Siconolfi, Robert A. (Department: 3683)

Brakes

Wheel

Transversely movable

C188S336000

Reexamination Certificate

active

07104370

ABSTRACT:
A drum brake assembly which includes a rotatable drum having a radially inner drum braking surface and a brake shoe of single piece construction and of generally circular form mounted within the drum and against a backing plate. The brake shoe includes friction lining and at least one flange projecting radially inwardly. The brake shoe has positioning arrangement for positioning the brake shoe within the drum in an inoperative condition against lateral movement into engagement with the drum braking surface, to provide for complete clearance between the friction lining and the drum braking surface in the inoperative condition. The positioning arrangement includes an engagement member for engagement with an abutment arrangement. The abutment arrangement includes radially inner and outer abutments and the engagement member is arranged for engagement with the radially inner abutment in the inoperative condition of the assembly to position the friction lining away from the drum braking surface, and with the radially outer abutment when the brake shoe is radially expanded to the operative condition of the assembly.

REFERENCES:
patent: 1913156 (1933-06-01), Frehse
patent: 2024847 (1935-12-01), Chambers
patent: 2057749 (1936-10-01), Tatter
patent: 2273223 (1942-02-01), Sawtelle
patent: 2596379 (1952-05-01), Dodge
patent: 3869026 (1975-03-01), Williams
patent: 5246093 (1993-09-01), Wang

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