Patent ID: 6027257
Filing Date: 2000-02-22
Classification: F16M,G08B

Abstract:
A pan-tilt unit for panning and tilting a device, the pan-tilt unit comprising:a base;a pan platform rotatably supported on the base about a pan axis;a tilt bed rotatably supported on the pan platform about a tilt axis that is transverse to the pan axis, the tilt bed being constructed and arranged to support a device thereon;a pan motor mounted to the base and coupled to the pan platform to drive the pan platform about the pan axis during a panning operation; anda tilt motor mounted to the base and coupled to the tilt bed to drive the tilt bed about the tilt axis during a tilting operation;each of the pan motor and the tilt motor being stationary relative to the base during the panning and tilting operations, the pan and tilt motors to be operated in opposite directions to maintain the tilt bed at a fixed tilt angle about the tilt axis as the pan platform rotates about the pan axis during the panning operation.