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:
Mar. 05, 1985
Filed:
Jun. 23, 1983
Kazunori Kuromoto, Komatsu, JP;
Kabushiki Kaisha Komatsu Seisakusho, Tokyo, JP;
Abstract
A gripping device includes a plurality of articulate gripping fingers coupled to a support structure turnable with respect to a neck structure. The articulate fingers respectively have first and second segments pivotally movable by oil hydraulic cylinders. Oil hydraulic pressure is applied to the oil hydraulic cylinders from an oil hydraulic pump. A pilot relief valve which can provide a variable relief pressure according to a pilot pressure, is provided on the discharge line leading from the oil hydraulic pump, and can be connected to a directional control valve to an oil hydraulic cylinder, which can provide a variable pilot pressure according to the extent of depression of a clamping force setting pedal provided in an operator's room.