Brakes – Wheel – Transversely movable
Patent
1984-01-20
1985-05-07
Butler, Douglas C.
Brakes
Wheel
Transversely movable
188196R, F16D 6538
Patent
active
045152500
ABSTRACT:
A duo-servo drum brake (10) includes an adjusting mechanism (40) for effecting brake shoe (18, 20) adjustment during application of the brake. The brake (10) includes a cable (42) connected to the anchor pin (28) and one of the brake shoes (20), and to an adjuster connector (46) attached at its end. The adjuster connector (46) contains an elongated slot (49) receiving therein an end (61) of an opposing force clutch spring (60) mounted upon the adjusting pivot nut (56) of an extendible strut (50). The adjuster connector (46) is connected to a resilient return spring (70) anchored to the one brake shoe (20). A second opposing force clutch spring (62) is secured at one end (63) to the one brake shoe (20) and is mounted about the adjusting pivot nut (56) in order to prevent retraction rotation of the nut (56). The first and second opposing force clutch springs (60, 62) effect unidirectional rotation of the adjusting pivot nut (56) to extend the strut (50) and prevent counter rotation of the pivot nut (56) when the brake (10) is deactivated.
REFERENCES:
patent: 3003592 (1961-10-01), Kell
patent: 3069764 (1962-12-01), Swats et al.
patent: 3149500 (1964-09-01), Swats et al.
patent: 3335822 (1967-08-01), Edwards
patent: 4026394 (1977-05-01), Wright
Allied Corporation
Butler Douglas C.
Decker Ken C.
Palguta Larry J.
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