Trackball position control device

Details Trackball position control device Trackball position control device

G - Physics

08

C

340/135.1

G08C 21/00 (2006.01) G06F 3/033 (2006.01)

Patent

CA 1192285

ABSTRACT A trackball device includes a housing con- taining a plurality of rotatable supports and a ball seated thereon with a portion of the ball projecting through an opening in the housing for manual rotation by a user. First and second ones of the supports com- prise shafts respectively rotatable about orthogonally related axes, the shafts being rotatably mounted in bearings receivable in slots in the housing accommodat- ing slight movement thereof indirections perpendicular to the plane of the ball opening. Bias springs re- siliently urge the bearings, and thereby the shafts and ball toward the ball opening. The device may also in- clude illumination means and a light-transmitting ball.

419403

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