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:
Jun. 27, 2000
Filed:
Mar. 30, 1999
Toshiyuki Yoshida, Nishinomiya, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Hyogo, JP;
Abstract
The fluid pressure device includes a valve housing 2 in which a spool hole 14 is formed, and a spool 18 having a first spool portion 22 inserted in the spool hole 14, and the spool portion 22 is movable with respect to the first hole portion 26 of the spool hole 14 in its axial direction. More fluid grooves 110 are formed in the first spool portion 22. Pressurized fluid acting on one side of the fluid groove 110 have pressure higher than that of pressurized fluid acting on the other sides of the fluid groove 110. A first gap between an outer peripheral surface of the one side of the seal portion and an inner peripheral surface of the first hole 26 between the adjacent fluid groove 110 is set slightly greater than a second gap between an outer peripheral surface of the other side of the seal portion and the inner peripheral surface of the first hole.