The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 1985
Filed:
Nov. 04, 1983
Akio Matsumoto, Himeji, JP;
Mitsuyoshi Yokota, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
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.