Patent ID: 7775927

Claim:
An industrial truck having interchangeable transmission modules, comprising: an internal combustion engine; an interchangeable transmission module located downstream of the engine and having an adjustable output speed; and a drive axle with a differential transmission in a mechanical drive connection with the transmission module, wherein the transmission module is a selectively interchangeable transmission module of a traction drive selected from the group consisting of a first transmission module comprising a hydrostatic compact transmission having a hydraulic pump with an adjustable hydraulic delivery volume and a hydraulic motor that is in a functional hydraulic connection with the pump, and a second transmission module comprising an electric compact transmission having a generator and an electric motor that is in a functional electrical connection with the generator and wherein each transmission module has a standardized input interface configured to engage the internal combustion engine and a standardized output interface configured to engage the drive axle such that either the first transmission module or the second transmission module can be selectively installed as a unit depending upon a desired use of the industrial truck.