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. 11, 2025
Filed:
Mar. 24, 2023
T-max (Hangzhou) Technology Co., Ltd., Zhejiang, CN;
Hangfei Yu, Zhejiang, CN;
Shipei Yao, Zhejiang, CN;
Senbiao Ge, Zhejiang, CN;
Haojia Chen, Zhejiang, CN;
Haibin Chen, Zhejiang, CN;
Xuebo Hu, Zhejiang, CN;
T-MAX (HANGZHOU) TECHNOLOGY CO., LTD., Hangzhou, CN;
Abstract
A brake device for a winch and a winch are provided. The winch includes a rope drum, and the brake device includes a brake sleeve, an elastic ring, a torsion spring and a braking assembly. The torsion spring is fitted over the braking assembly, and the brake sleeve is fitted over the torsion spring. The braking assembly is configured to drive the torsion spring to move between an extended position and a retracted position, so as to lock and release the brake sleeve. The elastic ring is fitted over the brake sleeve and configured to abut with an inner wall of the rope drum.