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:
Jan. 03, 2017
Filed:
Jul. 17, 2012
Norio Takehana, Iwate, JP;
Norio Takehana, Iwate, JP;
MIKUNI CORPORATION, Tokyo, JP;
Abstract
Provided is a hydraulic circuit for transmissions with which, while suppressing the hydraulic circuit from becoming complicated, it is possible to suppress an operational failure and a drop in the oil pressure of the hydraulic circuit, and to stabilize an oil pressure in the hydraulic circuit. The CVTincludes a part to be lubricated and a hydraulic control part for controlling transmission. The hydraulic circuit for transmissions includes a hydraulic oil pathwayfor supplying oil from the pump apparatusto the hydraulic control part, and a lubricating oil pathwayfor supplying oil containing an air bubble to the part to be lubricated. The pump apparatusincludes a multi-stage trochoid pumpand has an air bubble-containing oil discharging partfor discharging the oil containing an air bubble to the first stage trochoid pump part. The air bubble-containing oil discharging partis connected to the lubricating oil pathway. The second stage trochoid pump partincreases pressure of the oil discharged from the first stage trochoid pump part, and discharges it from the high-pressure oil discharging part. The hydraulic oil pathwayis connected to the high-pressure oil discharging part