Torque controller shutoff mechanism

Details Torque controller shutoff mechanism Torque controller shutoff mechanism

B - Operations, Transporting

25

B

81/23

B25B 23/145 (2006.01)

Patent

CA 1050308

TORQUE CONTROLLER SHUTOFF MECHANISM ABSTRACT OF THE DISCLOSURE A torque tool having a rotation transmitting, torque sensing, energy absorbing, non-overriding mechanism inter- connecting a motor and a rotatable driven head. The mechanism includes a driven member coupled to the head and a driver coupled to the motor with the driver yieldably biased toward the driven member. The driven member has cam surfaces facing the driver engaged by bearing surfaces on the driver. The cam surfaces on the driven member permit rotation of the driver relative to the driven member and are sloped such that a preselected torque between the driven member and driver results in the rotation and translation of the driver relative to the driven member. The translation is communicated for the release of a valve rod which actuates a valve to shutoff the motor. The kinetic energy causing relative rotation after shutoff of the motor is stored and dissipated by springs.

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