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:
May. 30, 2006
Filed:
Sep. 20, 2004
Stephen A. Rudinec, Iron Mountain, MI (US);
Stephen A. Rudinec, Iron Mountain, MI (US);
Oldenburg Group Incorporated, Glendale, WI (US);
Abstract
A battery-powered vehicle for transporting a mined payload or supplies over the roadways existing in or around an underground mine, includes variable voltage, variable frequency drivers that convert DC voltage from a battery into an AC voltage for driving AC induction motors of a front wheel drive system of the vehicle, and a further variable frequency driver that converts DC voltage from the battery into an AC voltage for driving an AC pump motor for supplying hydraulic fluid to hydraulically operated components of the vehicle. A controller controls the operation of the variable voltage variable frequency drivers in response to commands supplied to the controller by an operator of the vehicle.