US PATENT SUBCLASS 72 / 21.3
.~.~ To stop machine


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}
20.1  DF  .~ Sensing tool or tool-linked part {5}
21.3.~.~ To stop machine


DEFINITION

Classification: 72/21.3

To stop machine:

(under subclass 20.1) Subject matter comprising terminating or tending to terminate the operation in response to a predetermined position of a tool.

(1) Note. This subclass (is not intended to include, for original placement, a patent claiming an operation wherein a cam surface (on or linked to a tool) directly causes movement of a clutch element to disengage a tool from its drive. Such patent lacks the teaching of an initiating means, and will be placed on the basis of the deforming structure and found in this subclass (26) only as a cross-reference.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+, for a machine, or a part thereof, stops in response to a random signal or impulse.

14.3, for a metal deforming machine having a roller or roller-like tool, with sensing of a tool or tool-linked part to stop the operation of the machine.

30.1, for a deforming generally wherein a machine, or a part thereof, stops when an intended operation has been completed.