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:
Nov. 24, 1981
Filed:
Apr. 12, 1978
Richard B Stanley, Barrington, IL (US);
Other;
Abstract
A hand brake for railroad cars comprising a winding drum journaled within its housing to be in concentric relation with the hand brake operating shaft. A brake chain wind up and let out control mechanism is interposed between the brake drum and the operating shaft, with the winding drum being journaled between a pair of annular bearing plates that are concentric with the shaft and fixed to the housing in spaced apart relation to receive the winding drum. The shaft is coupled to the winding drum by a sun and planetary gear reducer mechanism in which a plurality of planetary gear assemblies are mounted on one or more circular lands concentric with the operating shaft for free rolling non-journaled orbiting movement about the sun gear that is keyed to the operating shaft for rotation by same to effect wind up and let up of the brake chain. The sun and planetary gear mechanism has its parts oriented to provide a central drive input and output with balanced internal force applying and resisting characteristics. Brake chain take up and let out is effected by the operator manually operating the operating shaft, and no separate brake chain release mechanism is need or provided for.