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:
Sep. 17, 1991
Filed:
Mar. 01, 1990
Robert T Mintus, Warren, OH (US);
John C Paine, Chardon, OH (US);
Caterpillar Industrial Inc., Mentor, OH (US);
Abstract
Automated charging systems for vehicles having rechargeable batteries are in common use today. Such systems typically have exposed contacts or the need for additional circuitry to move the contacts. The subject system includes circuitry which allows the charge receiving member to be only connected to the battery during charging. The charging system produces a charging signal in response to a low battery. A microprocessor receives the charging signal and responsively produces a 'pulse' signal. A second transistor switch receives the 'pulse' signal and responsively energizes a charging contactor coil. In response to the charging contactor coil being energized, contacts controllably block power from the battery to the motor and pass power from the receiving member to the battery.