Patent ID: 6915878
Filing Date: 2005-07-12
Classification: A61G,B60K,B60L,B62D,B62K,B66F,Y02T

Abstract:
1. A device for carrying a payload, which may include a user, over a surface, the device comprising: a. a payload support which supports the payload at a height above the surface, b. a ground-contacting module, mounted to the platform, including a plurality of laterally disposed ground-contacting members and defining a fore-aft plane; c. a motorized drive arrangement, coupled to the ground-contacting module; the drive arrangement, ground-contacting module and payload constituting a system; the motorized drive arrangement causing, when powered, automatically balanced operation of the system in an operating position that is unstable with respect to tipping in at least a fore-aft plane when the motorized drive arrangement is not powered; and d. an elevation mechanism for permitting variation of the height of the payload above the surface.