PDA and button apparatus of PDA
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United States of America Patent
Stats
-
Dec 28, 2004
Grant Date -
Jan 22, 2004
app pub date -
Nov 15, 2002
filing date -
Jul 17, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention provides a button apparatus for an electrical device having a circuit board with M switch devices wherein M is a positive integer number. The button apparatus includes a body and a pillar. The body has M protrusions respectively corresponding to the M switch devices for selectively actuating the M switch devices. The pillar has a first end and a second end. The second end has a projection used as a pivot. The first end presses against a central part of the body. When the body is pushed downward, the body presses upon the first end and the projection touches against the circuit board for controlling one of the M protrusions to selectively actuate one corresponding switch device.
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