US PATENT SUBCLASS 318 / 475-- .~.~ Mechanical-type detector (e.g., by yielding spring devices)

US PATENT SUBCLASS 318 / 475
.~.~ Mechanical-type detector (e.g., by yielding spring devices)

Current as of: June, 1999
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318 /	HD	ELECTRICITY: MOTIVE POWER SYSTEMS

445	DF	AUTOMATIC AND/OR WITH TIME-DELAY MEANS (E.G., AUTOMATIC STARTING AND/OR STOPPING) {20}
474	DF	.~ Motor load, armature or primary or secondary circuit current {2}
475		.~.~ Mechanical-type detector (e.g., by yielding spring devices)

DEFINITION

Classification: 318/475

(under subclass 474) Subject matter in which a mechanical device is provided to sense or detect the existence of a predetermined load on the motor.

(1) Note. As an example, a resilient shaft coupling device, the load end of which is variably displaced under varying load conditions with respect to the motor end of the coupling, can be used in combination with contact devices or variable impedance devices whereby the relative movement between the parts of the coupling device is availed of to actuate the contacting or impedance device in response to changes in load to initiate operation of control means for the motor.