Hydraulic drive apparatus

Details Hydraulic drive apparatus Hydraulic drive apparatus

2006-10-11

2009-02-10

Leslie, Michael (Department: 3745)

Power plants

Pressure fluid source and motor

Input pump and rotary output motor system having...

C060S454000

Reexamination Certificate

active

07487636

ABSTRACT:
In a hydraulic drive apparatus such as a transaxle, a rotatable hydraulic pump and rotatable hydraulic motor are disposed in a housing forming a sump. A hydraulic mounting member such as a center section is disposed in the sump and includes a pump mounting surface for the pump and a motor mounting surface for the motor, with hydraulic porting formed in the center section for connecting the mounting surfaces. The center section includes a channel formed on an external surface thereof, and at least one of the housing members is engaged to the center section to close the channel and form a fluid passage in the center section. This engagement is either direct, such as through sealant, or indirect through a cover.

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