Computer trackball

Details Computer trackball Computer trackball

G - Physics

06

F

G06F 3/033 (2006.01)

Patent

CA 2188480

A computer trackball comprises a transparent outer sphere inside of which is disposed a second inner sphere. The outer diameter of the inner sphere is a little bit smaller than the inner diameter of the outer sphere. Disposed on the outer surface of the inner sphere, at one "end" thereof is a logo or other graphical image. The inner sphere tends to maintain itself in a predetermined orientation ? e.g., with the graphical image pointing directly "up" relative to the keyboard or other housing in which the trackball is held ? notwithstanding rotation of the outer sphere by a user in the course of operating the trackball.

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