Pointing device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 22, 2005
Grant Date -
Jul 29, 2004
app pub date -
Jan 28, 2003
filing date -
Jan 28, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pointing device includes a casing in which a track ball is rotatably received and physically engaging two substantially perpendicular rotatable axles and a biasing structure forcibly biasing the track ball toward the axles. The biasing structure includes a frame rotatably supported inside the casing by pivots and a retainer mounted to the frame. The retainer includes a plurality of pawls spaced along a circumference to form a space for rotatably receiving and retaining a sphere. A biasing element is arranged between the casing and the frame to bias the sphere to forcibly engage the track ball thereby forcing the track ball against the rotatable axles.
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