Measuring and testing – Dynamometers – Responsive to torque
Patent
1991-04-17
1992-10-06
Razavi, Michael
Measuring and testing
Dynamometers
Responsive to torque
7386221, G01L 524
Patent
active
051521822
ABSTRACT:
A torque measuring apparatus is described that comprises: (1) a pair of parallel flexible mechanical beams mounted in like cantilever fashion on a chassis; (2) a torque-transmitting shaft rotatably mounted to the chassis; (3) a force-transmitting arm having a first end attached to the torque-transmitting shaft so as to rotate therewith and a second end extending between and adjacent to said beams; (4) an encoder having a rotatable input shaft coupled to said torque-transmitting shaft so that rotation of said torque-transmitting shaft will cause rotation of said input shaft; and (5) means on said torque-transmitting shaft for coupling said torque-transmitting shaft to one component of an aritcle to be tested, e.g., the screw cap on a tube or bottle, whereby a torque applied to said one component is transmitted to said torque-transmitting shaft. The applied torque causes the torque-transmitting shaft to act via the force-transmitting arm to bend one or the other of the two beams, according to the direction of rotation of said shaft. The encoder translates the rotation of the torque-transmitting shaft into an electrical output that varies as a function of the applied torque. Additional means are provided for producing an output signal that is indicative of the magnitude of the applied torque.
REFERENCES:
patent: 4212196 (1980-07-01), Krieger et al.
Razavi Michael
Shopbell Elizabeth L.
Vibrac Corporation
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