Patent ID: 7241103

Claim:
A method for adjusting a position of an object to compensate for tilt, comprising: providing a rotatable base supporting an object; directing the object relative to the base such that the position of the object is controlled relative to a first axis, the object stabilized along a second axis; positioning the object relative to the base using first and second bearing arms, the first and second bearing arms movably coupling the object to the base at a first position relative to a third axis and a fourth axis, the third axis perpendicular to the first axis, the base operable to control the rotation of the object about the second axis; holding the object at first position at a deroll angle greater than zero degrees and less than ninety degrees relative to the third axis using the bearing arms, each bearing arm comprising a first portion and a second portion, the first portion coupled to the object and coincident with the third axis, the second portion to the base and coincident with the fourth axis; and adjusting the object to a second position using the first and second bearing arms to maintain the first axis when a tilt angle of the base is detected.