US PATENT SUBCLASS 72 / 18.5
.~.~.~ Sensing lead end or tail end

Current as of: June, 1999
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72 /   HD   METAL DEFORMING

6.1  DF  WITH USE OF CONTROL MEANS ENERGIZED IN RESPONSE TO ACTIVATOR STIMULATED BY CONDITION SENSOR {7}
17.3  DF  .~ Sensing work or product (e.g., by X-ray) {6}
18.1  DF  .~.~ Including plural sensors or sensor responsive to plural conditions {6}
18.5.~.~.~ Sensing lead end or tail end

DEFINITION

Classification: 72/18.5

Sensing lead end or tail end:

(under subclass 18.1) Subject matter including detecting the forward edge or the trailing edge of moving work.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7.5, 8.8, 11.5, 12.5, 15.4, 16.7, and 19.4, for other sensing of the lead end or tail end of work or product.