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. 28, 2017
Filed:
May. 17, 2016
Crrc Qingdao Sifang Rolling Stock Research, Qingdao, CN;
Jingquan Bi, Qingdao, CN;
Chaoheng Wang, Qingdao, CN;
Xiangrui Li, Qingdao, CN;
Jigang Zhou, Qingdao, CN;
Xin Zhang, Qingdao, CN;
Chao Lin, Qingdao, CN;
Abstract
Provided is a hand brake, comprising a hand wheel (), a chain (), an enclosure (), a drive shaft assembly () which is disposed in the enclosure (), bull gear (), and base assembly; the hand wheel () is connected to the drive shaft assembly (), one end of the chain () is fixed to the bull gear () by means of rivets, and the main shaft of the bull gear () is a chain winding shaft (). The hand brake further comprises a limiting device disposed on the chain winding shaft () between the bull gear () and the base (); the limiting device comprises a first bearing (), a torsion spring (), a guide plate (), and a guide plate holder (). Installing the hand brake not only prevents the problem of the chain interfering with the movable pulley when the hand brake is deployed and thus affecting the performance of the hand brake, but also provides for a better appearance.