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:
Jan. 06, 2015
Filed:
May. 19, 2011
Toshikazu Minoshima, Kasumigaura, JP;
Kichio Nakajima, Kasumigaura, JP;
Toshikazu Minoshima, Kasumigaura, JP;
Kichio Nakajima, Kasumigaura, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
Wheel drive motors () constituted of electric motors for driving rear wheels () are provided on a vehicle body () of a dump truck (). Each wheel drive motor () is connected to a main power generator () through a bidirectional converter () and the like and driven by power supplied from the main power generator (). A resistor () that consumes regenerative power from each wheel drive motor () is connected to the bidirectional converter (). Cooling air is supplied to the resistor () from a blower (). Operations of a switch () of the resistor () and the blower () are controlled by a controller (). A mode selecting switch () for selecting a heating mode (A), a blowing mode (B), and a heating and blowing mode (C) is connected to the controller ().