US PATENT SUBCLASS 72 / 13.3
.~.~.~ Sensing pressure of tool actuating fluid

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}
6.2  DF  .~ Metal deforming by use of roller or roller-like tool element {8}
13.1  DF  .~.~ Including use of sensor responsive to energy input to tool or tool driver {2}
13.3.~.~.~ Sensing pressure of tool actuating fluid

DEFINITION

Classification: 72/13.3

Sensing pressure of tool actuating fluid:

(under subclass 13.1) Subject matter wherein the tool is driven by a pneumatic or hydraulic system including detecting the force per unit of area in that system.

(1) Note. Compare the subject matter of this subclass with that of subclasses 28.2+. A patent for these subclasses discloses a detecting means (e.g., a solenoid in this subclass or a pressure-responsive diaphragm in the indented subclass 20) that discerns an overload or change in load of electrical or hydraulic pressure, whereas a patent for subclasses 28.1+ lacks a clearly evident detecting means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

28.2+, for a metal deforming machine that uses a roller or roller-like tool and a self regulating control system utilizing electrical or hydraulic energy. See (1) Note above.