US PATENT SUBCLASS 144 / 391
.~ Including plural sensors or sensor responsive to comparison between plural conditions

Current as of: June, 1999
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144 /   HD   WOODWORKING

382  DF  WITH USE OF CONTROL MEANS ENERGIZED IN RESPONSE TO ACTIVATOR STIMULATED BY CONDITION SENSOR {6}
391.~ Including plural sensors or sensor responsive to comparison between plural conditions {2}
392  DF  .~.~> Sensing work or product (e.g., by X-ray) {7}
401  DF  .~.~> Sensing tool or tool-linked part

DEFINITION

Classification: 144/391

Including plural sensors or sensor responsive to comparison between plural conditions:

(under subclass 382) Subject matter including using (a) multiple detecting means to discern a corresponding number of characteristics or (b) a single detecting means to discern multiple characteristics; in either case, then comparing the characteristics and generating a resultant impulse representing the similarities or differences between the

detected characteristics, whereby the regulating means governs the machine in accordance with the resultant impulse to correct incipient errors in the machine or to maintain operation of the machine.

SEE OR SEARCH THIS CLASS, SUBCLASS:

384+, for woodworking including multiple sensing with comparison of impulses from the sensors.

403+, 423 and 425, for woodworking including multiple sensing but without comparison of impulses from the sensors.