发明名称 |
Mouse and trackball design with contact-less roller sensor |
摘要 |
A mouse or track ball has a roller ball mounted within a housing by three free rollers in contact with an outer peripheral surface of the roller ball. An inner core of the roller ball is provided of a magnetic material having either bumps or holes at an outer periphery thereof. The inner core is coated with a non-magnetic material providing an outer smooth and round surface for the ball.
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申请公布号 |
US5583541(A) |
申请公布日期 |
1996.12.10 |
申请号 |
US19950383324 |
申请日期 |
1995.02.03 |
申请人 |
TANDBERG DATA STORAGE AS |
发明人 |
SOLHJELL, ERIK |
分类号 |
G01D5/14;G06F3/033;G06F3/038;(IPC1-7):G09G5/08 |
主分类号 |
G01D5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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