Brakes – Wheel – Transversely movable
Patent
1987-02-27
1988-09-13
Kashnikow, Andres
Brakes
Wheel
Transversely movable
188 7962, 267161, 267182, F16D 5100, F16F 134, F16F 100
Patent
active
047702788
ABSTRACT:
An automatic adjustment device for internal shoe brakes, comprises a fixed housing disposed interiorly of a rotating brake drum, a slidably guided, non-rotatable, axially displaceable pressure element disposed in the housing and operated mechanically or by a pressurized fluid, the pressure element acting on the brake shoe via a rotatable adjustment bushing and an adjusting bolt which is screw-connected to the adjustment bushing and is non-rotatably connected to the brake shoe, and a ring rotatably mounted in the pressure element. A first end face of the ring rests against a spring which presses against the base of the pressure element, and a second end face of the ring rests against the end face of the adjustment bushing which extends into the interior of the pressure element. The ring has an inclined slot engaged by a pin element affixed to the housing. The mutually facing end faces of the ring and adjustment bushing form a ratchet-like unidirectional clutch. In order to achieve high reliability against breakage and long service life of the spring, it is comprised of a steel wire having a circular cross section which is bent into a ring shape with an open gap and further formed into an arcuate shape following a cylindrical surface when viewed radially.
REFERENCES:
patent: 236624 (1881-01-01), Pratt
patent: 1768842 (1930-07-01), Holdsworth
patent: 4360086 (1982-11-01), Bond et al.
patent: 4365791 (1982-12-01), Orain et al.
Lattrell Klaus
Schneider Wilhelm
Deutsche Perrot-Bremse GmbH
Kashnikow Andres
Oberleitner Robert J.
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