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:
Nov. 09, 2010
Filed:
Mar. 08, 2005
Masaki Yoshikawa, Tsuchiura, JP;
Jujitsu Murota, Tsuchiura, JP;
Yasuo Yamazaki, Osaka, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A forward/reverse control system for a work machine cancels a second control state, in which forward/reverse switching control is performed by a second forward/reverse control means, by an operation of a first forward/reverse control means to return to a first control state in which forward/reverse switching control is performed by the first forward/reverse control means. The system is provided with a F-N-R lever unit(the first forward/reverse control means) and F-N-R switch unit(the second forward/reverse control means) that instruct forward, reverse or neutral, a controllerwhich performs forward/reverse switching control by giving priority to an instruction from the F-N-R lever unitover an instruction from the F-N-R switch unitand a selector switchwhich by an operation of a switching control memberinstructs the controllerto switch to the second control state or to cancel the second control state. As a consequence, the system has made it possible to return to the first control state without an operation of the first forward/reverse control means.