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US 2001/0018992 A1Published application
Transporting device
AssigneeAlber Antriebstechnik GmbH
InventorUlrich Alber
Life of this patent
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Abstract
A transporting device has wheels, a stair climbing unit having climbing legs, an electric motor provided for driving of the stair climbing unit, a drive shaft which is driven by the electric motor and is formed as a crank shaft located symmetrically to a central longitudinal axis of the device, the drive shaft having halves each rotatably supporting a first crank for the climbing leg and a second crank for the wheel.
Claims8
A transporting device, comprising wheels;
- a stair climbing unit having climbing legs;
- an electric motor provided for driving of said stair climbing unit;
- a drive shaft which is driven by said electric motor and is formed as a crank shaft located symmetrically to a central longitudinal axis of the device, said drive shaft having halves on which a first crank for said climbing leg and a second crank for said wheel are supported.
Dependencies are inferred from the claim text.