Patent · US Active

Torque wrench

US8607675B2 · kind B2 · utility

2Cited by

1References

13Claims

0Family size

Inventors

Ting-Ko Tsai · Taichung, TW
Chun-Wei Yang · Hsinchu, TW
Zhe Zhang · Foshan, CN

Key dates

Filing date	Mar 21, 2011
Grant date	Dec 17, 2013
Priority date	—
Expiry date	Feb 23, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25B23/1427
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A torque wrench includes a driving head, a hollow handle, compression unit, an adjustment unit, an index unit and a display unit. The driving head and the handle are pivotably connected to each other. The compression unit has a resilient member and an end piece which contacts the driving head. The adjustment unit adjusts the length of the resilient member to set the torque of the wrench. The index unit has a first index and a second index, both of which are moved with the movement of the adjustment unit. The movement of the first index is detected by the display unit and transferred into digits to display the value of the torque. The second index is cooperated with the marks of the scale member to display the value of the torque.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.