Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1997-04-24
2000-09-05
Butler, Douglas C.
Brakes
Wheel
Axially movable brake element or housing therefor
188 26, 188 18A, 188 2422, F16D 5508, B62L 300
Patent
active
061128627
ABSTRACT:
A screw action disc brake comprises a disc centered on the wheel hub so that torque steer forces are not generated under braking; and a brake pad mounted on a collar which can be moved toward the disc to apply the brake, and away from the disc to release the brake; the collar in the form of a disc with a central circular hole, for clearing the axle mounting section of the hub, and an internally screw-threaded perpendicular perimeter lip. A circular cradle is fixed onto the axle by splines of screw-threads at its center, in such a manner that it cannot rotate about the axle, the cradle having a perimeter flange which is externally screw-threaded to mesh with the screw threads on the inside of the collar lip. The screw-threads are arranged so that when the collar is rotated on the cradle, by pulling a brake cable, in the opposite direction to that of the forward turning hub, the collar moves towards the brake disc.
REFERENCES:
patent: 483621 (1892-10-01), Reaney
patent: 1612356 (1926-12-01), Bregoz
patent: 1695665 (1928-12-01), Rueppel et al.
patent: 2045593 (1936-06-01), Frankland
patent: 2279274 (1942-04-01), Johnson et al.
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