US PATENT SUBCLASS 144 / 384
.~.~ 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}
383  DF  .~ Including use of sensor responsive to information carried by removable auxiliary record (e.g., recording disk, tape, or card) {1}
384.~.~ Including plural sensors or sensor responsive to comparison between plural conditions {3}
385  DF  .~.~.~> Utilizing "memory" to store information on tool or tool-linked part
386  DF  .~.~.~> Sensing "pattern"
387  DF  .~.~.~> Sensing work or product (e.g., by X-ray) {2}

DEFINITION

Classification: 144/384

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

(under subclass 383) 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:

391, for other 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.

SEE OR SEARCH CLASS

83, Cutting,

72+, for "self-regulating" or "feedback" control means; see the (4) Note under the definition of Class 72, subclass 382.