US PATENT SUBCLASS 73 / 1.08
.~ Dynamometer

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

1.01  DF  INSTRUMENT PROVING OR CALIBRATING {13}
1.08.~ Dynamometer {4}
1.09  DF  .~.~> Torque {2}
1.13  DF  .~.~> Weight
1.14  DF  .~.~> Rotor unbalance or a roller having a smooth surface
1.15  DF  .~.~> Load cell (e.g., strain gauge or piezoelectric sensor)

DEFINITION

Classification: 73/1.08

Dynamometer:

(under subclass 1.01) Subject matter wherein either (a) the apparatus for proving or calibrating or (b) the device being proven or calibrated measures or determines force, torque, work, or mechanical power.

(1) Note. For purposes of this subclass, a dynamometer may either be employed to measure an applied load or to apply a measured load (e.g., for test purposes).

SEE OR SEARCH THIS CLASS, SUBCLASS:

54.39, for a viscometer measuring shearing torque between parallel surfaces wherein more structure of the force measuring device is recited than is necessary to describe the calibrating apparatus.

862+, for a dynamometer, per se.

SEE OR SEARCH CLASS

177, Weighing Scales, appropriate subclasses, in particular 50, for a weighing scale combined with testing wherein more structure of the force measuring device is recited than is necessary to describe the calibrating apparatus.

310, Electrical Generator or Motor Structure,

338, for a force responsive piezoelectric sensor combined with mechanical energy coupling means.

318, Electricity: Motive Power Systems, appropriate subclasses for a dynamometer controlling a motor, in particular

646, for a positional servo system with force or weight measuring.

324, Electricity: Measuring and Testing,

727, for piezoelectric crystal testing.

338, Electrical Resistors,

2-, 6 for strain gauges, per se, in particular subclass 5 for a dynamometer type strain gauge, and subclass 47 for a force actuated electrical resistor.

340, Communications: Electrical,

665+, for an electrical indicating system providing a humanly perceptible signal in response to a predetermined force or stress.

FORCE: The strength or energy exerted upon or brought to bear or the cause of motion or change in motion or a state of rest.

POWER:

The rate at which work is done or the rate at which energy is transferred.

TORQUE:

A turning or twisting force or a force that produces or tends to produce rotation or torsion.

WORK:

The transference of energy that is produced by motion at the point of application of force which is measured by multiplying the force and the displacement of its point of application in the line of action.