Patent ID: 9726269
Date: 2017-08-08
CPC Classifications: B60K,F04B,F16H

Claim:
1. A modular drive device, comprising: an engine housing defining a common sump for hydraulic fluid; an engine crankshaft disposed in the common sump; a plurality of gears disposed in the common sump and driven by the engine crankshaft; a center section attached to the engine housing and comprising a pump running surface, a motor running surface and hydraulic porting connecting the pump running surface to the motor running surface and to the common sump, wherein the pump running surface is located inside the common sump and the motor running surface is located external to the common sump and the hydraulic porting shares oil with the engine crankshaft and the plurality of gears; a first pump located in the common sump and rotatably disposed on the pump running surface, wherein the first pump comprises a first pump shaft offset from the engine crankshaft and driven by a first gear of the plurality of gears; and a first motor rotatably disposed on the motor running surface, wherein the first motor is located entirely outside the common sump and is hydraulically connected to the first pump through the hydraulic porting.