Nègre's engine works with constant torque, and the only way to change the torque to the wheels is to use a continuously variable transmission, losing some efficiency.

In case of such machines with constant torques a coupling can be used to prevent stopping during start up, it should be rotation speed dependent.

They are equipped with an electric motor and a gear reduction unit to reduce the saw blade's rotational speed while maintaining constant torque.

A common technique for torsion tests is to apply a constant torque (electrically or by pulley wheels) and observe torsional creep.

Fusees became the standard method of getting constant torque from a mainspring.

The result is that the barrel provides approximately constant torque over the watch's designed running period; the torque doesn't decline until the mainspring has almost run down.

A major advantage of the hysteresis motor is that since the lag angle δ is independent of speed, it develops constant torque from startup to synchronous speed.

The three cup anemometer also had a more constant torque and responded more quickly to gusts than the four cup anemometer.

The burglar applies constant (though weak) torque on the tension wrench inserted into the cylinder, and tries the pick at each pin.

Some torsion wrenches, called feather touch wrenches, are coiled into a spring at the bend in the "L", which helps the user apply constant torque.