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. 07, 2012
Filed:
Oct. 25, 2007
Toshihiko Nishiyama, Oyama, JP;
Shuuji Hori, Oyama, JP;
Takahisa Iino, Oyama, JP;
Daisuke Kozuka, Oyama, JP;
Toshihiko Nishiyama, Oyama, JP;
Shuuji Hori, Oyama, JP;
Takahisa Iino, Oyama, JP;
Daisuke Kozuka, Oyama, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
Provided are a variable geometry turbocharger in which a drain pipe from a hydraulic servo drive device can be omitted and in which a member for transmitting power of the hydraulic servo drive device can be efficiently lubricated, and a method of returning oil from the hydraulic servo drive device. The variable geometry turbocharger includes a slide mechanism for changing an opening degree of a nozzle, the hydraulic servo drive device for driving the slide mechanism by hydraulic pressure, and drain flow paths for delivering oil exhausted from the hydraulic servo drive device into an oil return chamber adjacent to a turbocharger body.