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:
May. 29, 2007
Filed:
Mar. 15, 2006
Takashi Shibata, Sakai, JP;
Yoshio Tomiyama, Osaka, JP;
Takashi Kuramoto, Sakai, JP;
Hiroshi Shimada, Nara, JP;
Takeshi Komorida, Sakai, JP;
Kenji Nishihara, Nishinomiya, JP;
Masashi Osuga, Nara, JP;
Takashi Shibata, Sakai, JP;
Yoshio Tomiyama, Osaka, JP;
Takashi Kuramoto, Sakai, JP;
Hiroshi Shimada, Nara, JP;
Takeshi Komorida, Sakai, JP;
Kenji Nishihara, Nishinomiya, JP;
Masashi Osuga, Nara, JP;
Kubota Corporation, Osaka, JP;
Abstract
A hydrostatic continuously variable transmission comprises: a hydraulic pump; a power input shaft engaged with the hydraulic pump to transmit power from a power source to the hydraulic pump; a hydraulic motor in hydraulic communication with the hydraulic pump; a casing that houses the hydraulic pump and the hydraulic motor; a port block mounted to the casing, the port block having a block main body and a cover member connected to a power input side of the block main body, said cover member having an outer surface; a cooling hydraulic path provided in the port block in a region where the block main body and the cover member meet, the cooling hydraulic path being connected to a first hydraulic path in the port block, the cooling hydraulic path having a plurality of bends; a cooling fan provided on the power input shaft to provide air flow directly to the outer surface of the cover member.