Trackball
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United States of America Patent
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N/A
Issued Date -
Apr 27, 2006
app pub date -
Jan 29, 2003
filing date -
Jan 29, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A trackball capable of shining the ball in a dark place or in a dark state, preventing entrance of foreign matter, such as water or dust, into the case, increasing the degree of freedom of disposition and installation position of a lamp to thereby improve assemblability; and a trackball system. That is, the track ball comprises a transparent or semitransparent ball (1) penetrable to light, a case (2) for internally receiving the inner structure including detection shafts, a light source (3) having a cover and disposed in the case (2), the light source being an LED or the like that is a light source for radiating light to shine the ball (1), wherein the case (2) is transparent or semitransparent.
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