Wear indicator for brake lining

Details Wear indicator for brake lining Wear indicator for brake lining

1975-09-12

1977-02-01

Reger, Duane A.

Brakes

With condition indicator

Electrical

116114Q, F16D 6602

Patent

active

040057666

ABSTRACT:
A device for indicating the wear of a brake lining on a brake shoe consisting of a stud having a central aperture and secured within the opening of the brake shoe, and a rivet pin slidably disposed in the aperture of the stud and having an enlarged head disposed a predetermined depth below the wearing surface of the lining, and a spring indicating means coupled to the opposite end of said rivet pin and secured to the stud for biasing the rivet with a withdrawal force with respect to the stud so that when the head of the rivet pin is worn away at a predetermined brake lining depth, the pin will be withdrawn from the lining and a free projecting end of the spring will engage the rotating brake drum to produce an audible warning sound. In another embodiment a rivet is used only to secure the spring to the brake shoe. In other embodiments the rivet is eliminated and the spring is used in conjunction with a stud so that when the stud wears away, the spring will project against the rotating brake drum.

REFERENCES:
patent: 3592295 (1971-07-01), Kennel

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