Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1985-09-10
1987-08-11
Shoop, Jr., William M.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318306, 318325, 318481, 318484, G05B 500
Patent
active
046864393
ABSTRACT:
An electronic control system for a multiple speed fluid pump and motor. A parameter of the motor, the pump, or the fluid which is expelled from the pump is measured by a sensor. When a predetermined value of the parameter is reached, the sensor provides a trip signal to a timer circuit. The timer circuit provides a drive signal to a switch while the trip signal is present and for a specified period of time after the trip signal is removed. The switch, while it is receiving the drive signal, connects the motor driving the pump into a high speed configuration. After the specified period of time, the switch will cause the motor to change to low speed operation.
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Angotti Carl
Cunningham Robert L.
Rhodes Charles R.
Warner Paul H.
A. T. Hunn Company
Keane Patrick C.
Shoop Jr. William M.
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