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:
Aug. 27, 1996
Filed:
Jul. 25, 1994
Thomas J Dougherty, Waukesha, WI (US);
Globe-Union Inc., Milwaukee, WI (US);
Abstract
A dual battery or back-up battery system includes a control and indicator circuit for driving the battery switch. The battery switch is coupled between the positive terminals of the primary battery and auxiliary battery. The control and indicator circuit includes an indicator such as an LED, an indicator switch such as a single pole, single throw switch, and a driver circuit. The driver circuit includes a voltage tripler for appropriately driving a MOSFET battery switch. The indicator requires only a single signal conductor between the driver circuit and the indicator switch or indicator light. The indicator switch may also be utilized to provide a signal to a computer or other control circuit. The indicator switch and indicator are advantageously located within the interior of an automobile so that the operator may easily monitor and control the battery switch.