The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 1985
Filed:
Nov. 01, 1982
Kurt R Heidmann, Fairview Park, OH (US);
Donald A Vorwerk, N. Olmsted, OH (US);
Allied Corporation, Morristown, NJ (US);
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.