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:
Jul. 19, 2016
Filed:
Feb. 22, 2012
Atsushi Nakajima, Hitachi, JP;
Hiroyuki Kanazawa, Hitachi, JP;
Tomohiko Yasuda, Tsuchiura, JP;
Hitachi Power Solutions Co., Ltd., Ibaraki, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A trolley-type truck is provided with a pantograph and travels in a trolley mode under electric power from an overhead wire and a non-trolley mode without obtaining electric power. The pantograph has a base frame, a bottom frame and a top frame rockably attached to the base frame, and a collector shoe supported by the top end portion of the top frame. A fixing member is disposed on the top end side of the top frame for fixing the pantograph, a hook device is disposed on the base frame, and a hook receiver is disposed on the base frame in order to receive the fixing member. When a frame assembly formed of the bottom frame and the top frame is folded, the fixing member becomes seated in the hook receiver and is pressed by means of the hook device, thereby securely fixing the frame assembly to the base frame.