US PATENT SUBCLASS 83 / 289
.~.~.~ With photo-electric work-sensing means

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


83 /   HD   CUTTING

284  DF  CUTTING MOTION OF TOOL HAS COMPONENT IN DIRECTION OF MOVING WORK {17}
285  DF  .~ With means to initiate intermittent tool action {2}
286  DF  .~.~ Tool moved in response to work-sensing means {4}
289.~.~.~ With photo-electric work-sensing means

DEFINITION

Classification: 83/289

(under subclass 286) Device in which the detector includes a means responsive to light to energize an electrical circuit, and the detection of work is effected by a change in the quantity or quality of the light received by said means either directly (as by work's moving between said means and the source of said light), or indirectly (as by reflection from the work).

(1) Note. Examples of the means referred to above are vacuum tubes and other light-sensitive detectors.

SEE OR SEARCH THIS CLASS, SUBCLASS:

72+, for a photoelectric work sensor in a "self-regulating" device.

365, for other apparatus responsive to photoelectric work-sensing means and see Notes thereto.

SEE OR SEARCH CLASS

250, Radiant Energy, 200+, for photocell detector and circuit.