Torque sensor

Measuring and testing – Dynamometers – Responsive to torque

Reexamination Certificate

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Details

C073S862331, C073S862333

Reexamination Certificate

active

07845244

ABSTRACT:
A torque sensor includes a first shaft, a second shaft that is coaxially linked to the first shaft, a cylindrical magnet that rotates integrally with the first shaft, a pair of magnetic yokes that rotate integrally with the second shaft, and three magnetic sensors that respectively detect a change in magnetic flux of the magnetic yokes for calculating torque applied to the first and second shafts. Output characteristics of the three magnetic sensors are different from each other.

REFERENCES:
patent: 6880411 (2005-04-01), Nakane et al.
patent: 7047824 (2006-05-01), Nakane et al.
patent: 7143743 (2006-12-01), Uda et al.
patent: 7246531 (2007-07-01), Nakane et al.
patent: 7568400 (2009-08-01), Tokumoto et al.
patent: 2002/0189371 (2002-12-01), Nakane et al.
patent: 2002/0190709 (2002-12-01), Frederick et al.
patent: 2003/0209087 (2003-11-01), Nakane et al.
patent: 2004/0021459 (2004-02-01), Jones et al.
patent: 2004/0263103 (2004-12-01), Weisser et al.
patent: 2008/0028870 (2008-02-01), Tokumoto et al.
patent: 2 689 633 (1993-10-01), None
patent: 2003-149062 (2003-05-01), None
European Search Report issued Jul. 2, 2010 in EP 08165128.3 filed Sep. 25, 2008.

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