Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2008-01-15
2011-10-18
Caputo, Lisa (Department: 2855)
Electricity: measuring and testing
Magnetic
Displacement
C324S207200, C073S862325, C073S862331
Reexamination Certificate
active
08040130
ABSTRACT:
A device for detecting torque features of an electric screwer comprises a clutch for coupling with the electric screwer and a clutch for applying a resisting torque. The two clutches (11, 13) are connected to one another by a shaft (14) on which there are arranged extensometers (15) for measuring the torque transmitted by the shaft. On the shaft there is splined a disc (18) that bears on at least one face circular tracks (19, 20, 21, 22) that are coaxial to the shaft and to which the extensometers are electrically connected. Sliding contacts (23, 24, 25, 26) rest elastically on said circular tracks in a direction that is substantially parallel to the axis of the shaft to pick up the electric signals from the extensometers. An encoder (17) is provided to detect shaft rotation.
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PCT Search Report dated Apr. 29, 2008.
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Josef Hanisch, Was Sie Schon Immer Ober Hallsensoren Wissden Wollten, Elektronik Industrie, V. 7, 2006, pp. 2-5.
Atlas Copco BLM S.r.l
Caputo Lisa
Costigan James V.
Dunlap Jonathan
Hedman & Costigan ,P.C.
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