ApplicationNo. 500948 filed on 08/27/1974
US Classes:417/43, Responsive to change in rate of pump fluid flow417/223, Disconnectable drive element (e.g., clutch, belt, shifter, etc.)417/415, Reciprocating rigid pumping member417/44.1, By control of electric or magnetic drive motor417/44.2Responsive to pump fluid pressure
ExaminersPrimary: Croyle, Carlton R.
Assistant: Ross, Thomas I.
Attorney, Agent or Firm
AbstractA double acting pump is operated by a crank that is powered through a gear train driven by an electric motor. An adjustable pressure sensing device is used to control operation of the pump. A single motor, double pump embodiment is also described.