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. 24, 2009
Filed:
Oct. 07, 2004
Norihide Mizoguchi, Tochigi, JP;
Hisashi Asada, Tochigi, JP;
Daisuke Kozuka, Tochigi, JP;
Kazunori Ikei, Tochigi, JP;
Shuuji Hori, Tochigi, JP;
Norihide Mizoguchi, Tochigi, JP;
Hisashi Asada, Tochigi, JP;
Daisuke Kozuka, Tochigi, JP;
Kazunori Ikei, Tochigi, JP;
Shuuji Hori, Tochigi, JP;
Komatsu Ltd., Minato-ku, Tokyo, JP;
Abstract
A travel vibration suppressing deviceis structured such that a directional control valvefor a bucket, a directional control valvefor a boom, a ride control valveand a boom speed increasing valveare integrally arranged in a laminated manner by an internal piping. The ride control valvecommunicates or cuts off a bottom chamberof a boom cylinderand an accumulator. The boom speed increasing valvesupplies a discharge pressure of a hydraulic pumpto the bottom chamberor a head chamberor connects the to the bottom chamberor the head chamberto a tank