Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1976-06-04
1977-03-29
Blix, Trygve M.
Brakes
Wheel
Axially movable brake element or housing therefor
188 728, 188196BA, F16D 5502, F16D 6556
Patent
active
040144119
ABSTRACT:
A self-adjusting, mechanically actuated disc brake assembly in which the brake pads are pressed against the brake disc by cooperating drive threads formed on an actuating shaft and a piston. Adjustment is obtained by an adjuster nut having a fine thread complementary to and in engagement with a fine thread formed on the actuating shaft and a ratchet mechanism, including cooperating inclined teeth and spring loaded pins carried by the adjuster nut and an opposing portion of the piston. The frictional forces between the nut and the shaft are greater than those generated by contact between the nut and other portions of the assembly so that the nut tends to rotate in unison with the shaft. However, when the rotational movement of the shaft necessary to cause full engagement of the brakes becomes great enough, the spring loaded pins will slide over the edges of the inclined teeth, preventing retrograde movement of the nut and resulting in relative rotational movement between the nut and the shaft which advances the shaft towards the brake disc to compensate for brake wear.
REFERENCES:
patent: 3111198 (1963-11-01), Hodkinson
patent: 3155195 (1964-11-01), Brawerman
patent: 3820635 (1974-06-01), Hurt
Blix Trygve M.
Butler Douglas C.
Dayton-Walther Corporation
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