Brake actuator

Brakes – Wheel – Transversely movable

Patent

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Details

74110, 188196D, 188217, 188343, 192 93C, 192111A, F16D 6556

Patent

active

048876976

ABSTRACT:
A wedge and roller brake actuator comprises a wedge disposed between opposed tappets with interposed rollers acting to transmit thrust from the wedge to the tappets for brake actuation, a fixed inclined surface engaged by one roller to restrain the wedge for linear movement, and to ensure that one of the tappets normally associated, in use, with the brake trailing shoe, applies its associated shoe in advance of the other tappet, either the roller-engaging surfaces of the wedge and opposed tappet at either side of the wedge are inclined at different angles to the wedge longitudinal axis, or respective adjusters of the tappets are provided with different clearances between threadedly interengaged components thereof so that one tappet is adjusted to maintain its associated shoe nearer to the drum than the shoe associated with other tappet.

REFERENCES:
patent: 1848775 (1932-03-01), Girling
patent: 3302473 (1967-02-01), Lowry et al.
patent: 3599763 (1971-08-01), Bailey
patent: 3838757 (1974-10-01), Farr
patent: 3994371 (1976-11-01), Farr
patent: 4688661 (1987-08-01), Gockel et al.
patent: 4699256 (1987-10-01), Severinsson

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