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:
Feb. 03, 2004
Filed:
Jun. 28, 2002
Kunihiko Sakamoto, Osaka, JP;
Yanmar Diesel Engine Co., Ltd., Osaka, JP;
Abstract
In a configuration comprising a hydraulic servo mechanism ( ) having a spool ( ) as a hydraulic valve for controlling the swash plate angle disposed within a body housing ( ) of a hydraulic continuously variable transmission ( or ), and a manual operation member ( ) for operating the hydraulic servo mechanism disposed outside of the body housing, a casing ( ) is provided between the manual operation member and the body housing, a neutral position holding mechanism ( ) for holding the neutral position of a movable swash plate and a rotation control mechanism ( ) for controlling the maximum rotating angle of the movable swash plate are installed in the casing, and further an over-stroke absorbing mechanism ( ) for absorbing the over-stroke of the manual operation member is installed in an area ranging from the inside of the casing to the inside of the body housing, and moreover a spool operating member ( ) moving by operation of the manual operation member is disposed movably almost integrally with the spool.