Keyboard lid, its open-close structure and arm members for keyed instrument
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United States of America Patent
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Jan 30, 1996
Issued Date -
N/A
app pub date -
Dec 9, 1994
filing date -
Mar 9, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for slidingly opening and closing a keyboard lid for covering a keyboard of a keyed instrument between an open position and a close is provided. The keyboard lid has a front end with a pair of opposite sides and a rear end with a pair of opposite sides. A pair of front guide projections project laterally from the opposite sides of the front end of the keyboard lid. A pair of rear guide projections project laterally from the opposite sides of the rear end of the keyboard lid. A pair of side plates are arranged on opposite sides of the keyboard. Each one of the pair of side plates has a front guide groove engaging with a respective one of the pair of front guide projections and a rear guide groove engaging with a respective one of the pair of rear guide projections. In this manner, the keyboard lid is slidably guided between an open position and a close position.
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