Independently pivotable drivewheel for a wheeled chassis

Details Independently pivotable drivewheel for a wheeled chassis Independently pivotable drivewheel for a wheeled chassis

1998-07-23

2000-08-29

Culbreth, Eric

Motor vehicles

Power

Electric

180252, 180253, B60K 100

Patent

active

061093793

ABSTRACT:
A drivewheel assembly is connectable between a frame of a wheeled chassis and a drivewheel, and provides powered rotation for operatively moving the frame and chassis in a user-controllable direction along an underlying supporting surface and for selectively reorienting the drivewheel to change the direction of movement of the frame and chassis along the supporting surface. A motor connected to the drivewheel and operable to rotate the drivewheel is mounted to the frame for pivotal rotation relative to the frame about an orienting axis substantially perpendicular to the drivewheel axis of rotation. In a first operating mode of the drivewheel assembly the motor is coupled to the frame so as to prevent pivotal rotation of the motor about the orienting axis and maintain the current orientation of the drivewheel, whereby operation of the motor to rotate the drivewheel causes the frame and chassis to move along the supporting surface in a direction determined by the current orientation of the drivewheel. In a second operating mode of the drivewheel assembly the motor is decoupled from the frame so as to permit pivotal rotation of the motor about the orienting axis, whereby operation of the motor to rotate the drivewheel causes the motor to pivotally rotate about the orienting axis and thereby effects reorientation of the drivewheel for movement of the frame and chassis in a different direction determined by the reoriented drivewheel.

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