Patent ID: 6341489
Filing Date: 2002-01-29
Classification: F16D,F16H

Abstract:
An axle driving apparatus comprising:a hydrostatic transmission comprising a hydraulic pump and a hydraulic motor fluidly connected with each other; an axle having a lateral axis of rotation; a transmitting mechanism for transmitting power from said hydraulic motor to said axle; a housing for housing said hydrostatic transmission, said axle and said transmitting mechanism; a first oil sump and a second oil sump formed in said housing, wherein said hydrostatic transmission is disposed in said first oil sump, and said axle and said transmitting mechanism are disposed in said second oil sump; communication means interposed between said first oil sump and said second oil sump, wherein said communication means makes oil flow therethrough from said first oil sump to said second oil sump when oil in said first oil sump is expanded over the volume of said first oil sump, wherein a first opening of said communication means communicating with said first oil sump is disposed above the oil level of said second oil sump, and a second opening of said communication means communicating with said second oil sump is disposed below the oil level of said second oil sump.