Torque wrench

Details Torque wrench Torque wrench

2006-01-09

2010-11-16

Caputo, Lisa M (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

Reexamination Certificate

active

07832286

ABSTRACT:
The invention seek to enable to share main components other than a tightening unit even in use for different effective lengths corresponding to ranges of tightening torques. There are provided: a tightening unit10such as a ratchet; a housing20having a two-divided structure including a front side cover part21and a back side grip part22; a strain body30provided inside the housing20and replaceably coupling the tightening unit10thereto; a distortion sensor40, provided to the strain body30, for detecting the distorted amount of the strain body30due to the tightening force of the tightening unit10; a microprocessor chip100having functions including computing the tightening torque of the tightening unit10based on torque reference values prepared in advance and detection results of the distortion sensor40; and an output unit300for outputting such as the tightening torque.

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patent: 20108689 (2001-08-01), None
patent: 2841650 (2004-01-01), None
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patent: 2001-260044 (2001-09-01), None
patent: 2003-185515 (2003-07-01), None
Japanese Office Action dated Jul. 7, 2007 (in Japanese).
European Search Report dated Mar. 10, 2010.

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