Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1982-11-01
1985-03-12
Stoner, Jr., Bruce H.
Brakes
Wheel
Axially movable brake element or housing therefor
92 23, 188 711, 384220, F16D 55224
Patent
active
045039488
ABSTRACT:
A disc brake is actuated through a mechanical linkage comprising a power screw (54) which is rotatably mounted within the housing (22) and a piston or power nut (38) which is threadedly engaged with the power screw (54) and which also is engaged with the friction element (32). An annular thrust collar (70) is installed within the housing (22) and defines a thrust receiving surface (73) which faces a surface (62) on the power screw (54). Brake reaction forces are transmitted to the wall of the housing (22) without loading the bolts (86) in tension by way of the surfaces (62, 73) of the thrust collar (70), the surface (108) and the retaining ring (66). A take-up ring (84) made of a deformable material is carried in the groove (82) of the thrust collar (70) so that, when a brake is manufactured, the thrust collar (70) is first installed in the bore and the retaining ring (66) is then installed in the groove (64). When the brake is first applied, the reaction forces drive the collar (70) into the position illustrated in the drawings, thereby deforming the take-up ring (84) to pass under the retaining ring 66. The take-up ring (84) thereafter assumes its original shape to engage the retaining ring (66) to hold the thrust collar (70) in place. An alternate embodiment discloses an equivalent hydraulic actuator, in which the power screw is replaced by a hydraulic coupling.
REFERENCES:
patent: 2568858 (1951-09-01), Kovac
patent: 3974897 (1976-08-01), Pringle
patent: 4022300 (1977-05-01), Alfanador et al.
Heidmann Kurt R.
Vorwerk Donald A.
Allied Corporation
Antonis W. N.
Decker Ken C.
Gilday Michael P.
Stoner Jr. Bruce H.
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