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. 23, 2014
Filed:
Dec. 09, 2010
Toshikazu Minoshima, Kasumigaura, JP;
Michio Fushiki, Tsuchiura, JP;
Katsumi Tamura, Omitama, JP;
Takao Kurosawa, Ushiku, JP;
Toshikazu Minoshima, Kasumigaura, JP;
Michio Fushiki, Tsuchiura, JP;
Katsumi Tamura, Omitama, JP;
Takao Kurosawa, Ushiku, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
In case a burden is discharged from a vessel (), the vessel () is raised obliquely backward with respect to a vehicle body () by a hoist cylinder (). However, when discharging work is stopped on the way, the vessel () is temporarily lowered to a position at which this sits on the vehicle body (). When the vessel () lowers, a weight of the burden left loaded thereon acts on the hoist cylinder () as a load in addition to the weight of the vessel (). A controller () determines whether the vessel () lowers in a burden loading state based on various detection signals. When the vessel () lowers in the burden loading state, switching of directional control valves () and () is controlled so as to decrease a contracting speed of the hoist cylinder (), thereby prevent the vessel () from colliding against the vehicle body ().