Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SILENT WRENCH
Document Type and Number:
WIPO Patent Application WO/2016/004620
Kind Code:
A1
Abstract:
A wench comprising: a handle (11), where a first extremity of the handle (11) is provided with a columnar inner surface that serves as a first surface (111); a torque output component (12) arranged in the first surface (111) of the handle (11), where the torque output component (12) is provided with a columnar outer surface that serves as a second surface (121); one or more wedging component (141) arranged between the first surface (111) and the second surface (121); and, a variable pitch is provided between the first surface (111) and the second surface (121), thus allowing the wedging component (141) to prevent the first surface (111) from rotating in a preset direction relative to the second surface (121). The wrench employs the wedging component (141) to prevent rotation of the handle (11) relative to the torque output component (12), when the handle (11) is idling relative to the torque output component (12), only the wedging component (141) is freed from a stopping position, and no sound is produced, thus the wrench is a silent wrench. Employment of such structure not only reduces wearing of the wrench, but also extends the service life of the wrench, and improves user experience with using the wrench; also, the provision of pretension effectively reduces neutral gaps, thus allowing operation to be of increased smoothness.

More Like This:
JP2013047457GUARD RAIL BOLT
Inventors:
WANG, Min (No. 35 Jiuhuan Road, Jiubao Town Jianggan Distric, Hangzhou Zhejiang 9, 310019, CN)
Application Number:
CN2014/082039
Publication Date:
January 14, 2016
Filing Date:
July 11, 2014
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HANGZHOU GREAT STAR TOOLS CO., LTD. (No. 35 Jiuhuan Road, Jiubao Town Jianggan Distric, Hangzhou Zhejiang 9, 310019, CN)
HANGZHOU GREAT STAR INDUSTRIAL CO., LTD. (No. 35 Jiuhuan Road, Jiubao Town Jianggan Distric, Hangzhou Zhejiang 9, 310019, CN)
International Classes:
B25B23/00; B25B13/00; B25B21/00
Foreign References:
CN101269484A2008-09-24
CN101214641A2008-07-09
CN203045591U2013-07-10
US20110138970A12011-06-16
US20100101815A12010-04-29
Attorney, Agent or Firm:
SUNRAY INTELLECTUAL PROPERTY ATTORNEYS (ZHENG, LiSuite 1212, Tomson Commercial Building,710 Dong Fang Road, Pudong, Shanghai 2, 200122, CN)
Download PDF:



 
Previous Patent: WRENCH

Next Patent: MANUAL TOOL