US PATENT SUBCLASS 91 / 356
.~ Reversal responsive to motive fluid pressure change


Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

355  DF  CUTOFF AFTER SINGLE COMPLETE CYCLE {1}
356.~ Reversal responsive to motive fluid pressure change


DEFINITION

Classification: 91/356

(under subclass 355) Apparatus in which the working member of the motor is reversed to operate through the return stroke by means responsive to an increase or decrease in the pressure of the motive fluid.

(1) Note. The change in pressure of the motive fluid may be caused by the working member moving to a predetermined position, as by engaging the end of the cylinder or a stop, or by a change in the load on the working member having no relationship to the position of the working member or the distance it has traveled before the pressure change occurs.