US PATENT SUBCLASS 417 / 27
.~.~ Having independent means for delaying valve actuation


Current as of: June, 1999
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417 /   HD   PUMPS

1  DF  CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22}
26  DF  .~ With condition responsive control of pump fluid valve {3}
27.~.~ Having independent means for delaying valve actuation


DEFINITION

Classification: 417/27

(under subclass 26) Subject matter in which means are provided for retarding or delaying actuation of the valve means for the purpose of preventing increase of pressure in the pump until a period of time after the drive motor control means has been adjusted to cause such increase, said valve actuation delaying or retarding means being separate and isolated from the motor control means and having no retarding or delaying effect thereon.

(1) Note. Devices in which the pump fluid valve is caused to be operated in response to the motor control element having been adjusted to a predetermined motor controlling position are not included under this definition in the absence of a separate retarding or delaying means for the valve control means.