Electricity: motive power systems – Automatic and/or with time-delay means – Pressure in a fluid or granular material
Patent
1983-11-04
1985-06-18
Miska, Vit W.
Electricity: motive power systems
Automatic and/or with time-delay means
Pressure in a fluid or granular material
318484, 303 20, B60T 1366
Patent
active
045243123
ABSTRACT:
Disclosed is a control for a pumping device in a vehicle application in which, upon throwing a power switch (6), a capacitor (85) is charged and a power transistor (81) is rendered conductive thereby supplying a DC voltage from batteries (5) to a DC motor (2). The DC motor drives a pump (1) which in turn feeds pressure to a pressure-operating unit (10) for storage therein. If a given period of time has elapsed after throwing of the power switch, then the voltage charged on the capacitor increases to make a transistor (83) conductive and the power transistor (81) non-conductive. In other words, the DC motor is operated to provide pressure to the pressure-operating unit for only the given period of time after throwing of the power switch. Furthermore, upon closure of a brake actuator switch (4) another transistor (84) becomes conductive and the above transistor (83) becomes non-conductive. This renders the power transistor (81) conductive and supplies the DC voltage to the DC motor.
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Matsumoto Akio
Yokota Mitsuyoshi
Miska Vit W.
Mitsubishi Denki & Kabushiki Kaisha
Ro Bentsu
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