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:
Dec. 11, 2007
Filed:
Mar. 08, 2006
Takeshi Ouchida, Osaka, JP;
Shuji Shiozaki, Osaka, JP;
Hidekazu Niu, Osaka, JP;
Hiroshi Matsuyama, Osaka, JP;
Takeshi Ouchida, Osaka, JP;
Shuji Shiozaki, Osaka, JP;
Hidekazu Niu, Osaka, JP;
Hiroshi Matsuyama, Osaka, JP;
Yanmar Co., Ltd., Osaka, JP;
Abstract
The present invention relates to hydraulic equipment comprising input shaft () and output shaft; first and second plungers () and first and second spool valves () which are moved reciprocally axially; a cylinder block () which houses the plungers and spool valves and is rotated integrally with the input shaft; an input side swash plate () which touches the first plungers; and an output side swash plate () which touches the second plungers and is rotated integrally with the output shaft. The purpose of the present invention is to reduce number of parts concerning to the accuracy of the reciprocal movement of the first and second spool valves. Spool valve guides (and) on which guide grooves (and) slanted against axis of the rotary shaft are formed, and the first or second spool valve is engaged with a holding member (or) attached to the guide groove or the guide groove.