Measuring and testing – Blower – pump – and hydraulic equipment
Patent
1996-06-10
1998-03-03
Dougherty, Elizabeth L.
Measuring and testing
Blower, pump, and hydraulic equipment
73862191, 73862325, G01M 1900
Patent
active
057222860
ABSTRACT:
A torque/position transducer is positioned between the valve stem of a valve and a valve operator adapted to open and close the valve and includes a body section including an input lug adapted for mating the engagement with the output lug of the valve operator and an output lug adapted for mating the engagement with the valve stem of the valve. A pair of strain gauges are mounted on the body of the torque/position transducer and function to generate an output signal indicative of the amount of torque necessary to open or close the valve. The body further includes a cam secured to the body section. A magnet is positioned in movable contact with the cam. A magneto-resistive sensor senses the movement of the magnet as the cam varies the distance from said magnet to said sensor and generates a signal indicative of the position of the valve stem with respect to the valve under the action of the valve operator.
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Bernard Thomas Rogan
Bullock Jan Mark
Drushel Ronald H.
Robert Raoul W.
Dougherty Elizabeth L.
O'Neil Michael A.
Rippamonti Russell N.
T & R Solutions, Inc.
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