Patent ID: 9085256
Filing Date: 2015-07-21
Classification: B60P,B62D

Abstract:
1. A platform, carrier, or base comprising: a first wheel assembly and a second wheel assembly mechanically coupled to a support unit, wherein the support unit has at least a first side and a second side that are configured to be opposite one another, wherein the first wheel assembly is mechanically coupled to the first side of the support unit and the second wheel assembly is mechanically coupled to the second side of the support unit; wherein each wheel assembly comprises a mounting plate, a drive motor, a motor housing, a wheel, and an angle-adjusting motor; wherein the drive motor is mechanically coupled to the wheel by a drive shaft; the motor housing is moveably coupled to the mounting plate by a first hinge; the angle-adjusting motor is movably coupled to the mounting plate by a second hinge; and wherein the angle-adjusting motor comprises a lead screw and the motor housing comprises a lead screw coupler comprising a receptacle comprising a threaded opening for receiving the lead screw of the angle-adjusting motor; and wherein the angle-adjusting motor can be activated to position each of the two wheels at an angle θ relative to a plane parallel to at least one surface upon which the platform, carrier, or base is placed, wherein the angle θ for each of the two wheels can be the same or different and has a range from about 0 degrees to about 20 degrees.