Internal shoe-drum brake adjuster cam with leverage projections

Brakes – Wheel – Transversely movable

Patent

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Details

188 7957, 188196BA, 192101, 192111A, F16D 6552, F16D 5118

Patent

active

054111196

ABSTRACT:
An internal shoe-drum type brake has a pair of shoes separable by an actuator into braking engagement with a brake drum. An automatic adjuster includes a two-part strut extending between the shoes, the first strut part being pivotally mounted on the second strut part and cooperating with the latter via teeth on the second part, such that the first strut part is separated from the teeth when excessive shoe separation occurs upon brake actuation and is moved angularly to a new position of adjustment upon brake release. The first strut part is provided with a number of peripheral projections engagable by an external tool to disengage the first part from the teeth of the second part when it is desired to de-adjust the adjuster in order to facilitate drum removal.

REFERENCES:
patent: 2562356 (1951-07-01), House
patent: 2978072 (1961-04-01), Burnett
patent: 3581847 (1971-06-01), Torii et al.
patent: 3858463 (1975-01-01), Klavonich
patent: 3913710 (1975-10-01), Margetts
patent: 3991861 (1976-11-01), Hayashida
patent: 3998297 (1976-12-01), Aono
patent: 4645040 (1987-02-01), Knott et al.
patent: 4922771 (1990-05-01), Campbell

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