초록 ▼

An axle assembly for use in lawn tractors, pedestrian walk-behind mowers and snow blowers in the form of a housing having an internally disposed hydrostatic transmission and speed reducing gearing. An input shaft supported in the housing for driving a variable-displacement hydraulic pump of the hydr

An axle assembly for use in lawn tractors, pedestrian walk-behind mowers and snow blowers in the form of a housing having an internally disposed hydrostatic transmission and speed reducing gearing. An input shaft supported in the housing for driving a variable-displacement hydraulic pump of the hydrostatic transmission, the pump fluidly coupled to a fixed-displacement hydraulic motor of the hydrostatic transmission, and where the motor is drivingly connected through the speed reducing gearing to an output axle shaft or shafts. A mechanical differential disposed within said housing for applications requiring differential speeds of said axle output shafts. The housing being formed by three housing members and joined together along a substantially planar and horizontally peripheral seam formed there between such that two of said housing members are to one side of said seam and join with the third housing element. Two internal chambers formed by the three housing elements where one chamber contains the hydrostatic transmission and the other chamber contains the speed reducing gearing. A connecting shaft spanning between the chambers to provide the power transmission link between the hydrostatic transmission and the speed reducing gearing.

대표청구항 ▼

[ We claim:] [1.] An axle assembly comprising:a housing defined by first, second and third housing elements positioned along a substantially planar and horizontally peripheral seam formed therebetween such that said first and second housing elements are to one side of said seam;the third one of said

[ We claim:] [1.] An axle assembly comprising:a housing defined by first, second and third housing elements positioned along a substantially planar and horizontally peripheral seam formed therebetween such that said first and second housing elements are to one side of said seam;the third one of said housing elements being provided with first and second cavities and where the first cavity is joined by an opposing cavity provided by the first housing element to define a first chamber, the second cavity being joined by an opposing cavity provided by the second housing element to define a second chamber;a hydrostatic transmission disposed within said first chamber and comprising a hydraulic pump fluidly coupled to a hydraulic motor; an input power transmission shaft rotatably mounted in said housing and operatively connected to said hydraulic pump;speed reducing gearing disposed within said second chamber;a power transmission link comprising at least one shaft passing from said first chamber to said second chamber for the transmission of power between said hydraulic motor and said speed reducing gearing;at least one outwardly extending output power transmission shaft rotatably mounted in said housing and operatively connected to said speed reducing gearing.