Trackball device

Details Trackball device Trackball device

2008-01-29

2008-01-29

Enad, Elvin (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Permanent magnet-actuated switches

C335S151000, C335S152000, C335S153000, C335S206000, C335S207000

Reexamination Certificate

active

11375027

ABSTRACT:
A trackball device of the present invention includes an operating ball, multiple rollers which rotate by contacting the ball while it is rotated, multipole permanent magnets which co-rotate with these rollers, and a reed switch disposed in a position where it turns on and off as a result of changes in magnetic flux caused by the rotation of the permanent magnets so as to provide tactile feedback when the ball is rotated. The trackball device is configured to make an attractive force generated between the reed switch and permanent magnet affect the rotation of the rollers.

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