US PATENT SUBCLASS 72 / 19.9-- .~.~ Sensing pressure of tool actuating fluid

US PATENT SUBCLASS 72 / 19.9
.~.~ 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}
19.8	DF	.~ Including use of sensor responsive to energy input to tool or tool driver {1}
19.9		.~.~ Sensing pressure of tool actuating fluid

DEFINITION

Classification: 72/19.9

Sensing pressure of tool actuating fluid:

(under subclass 19.8) 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 28.1+. 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.