Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1986-02-11
1987-05-26
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
84DIG7, 200 1B, 200159B, G10H 300
Patent
active
046688439
ABSTRACT:
A keyboard switch apparatus for an electronic musical instrument has first and second switches each constituted by stationary and movable contacts. The stationary contacts of the first and second switches are formed adjacent to each other on a single board. The movable contacts of the first and second switches are mounted on a single flexible member arranged above the single board and are normally spaced apart from the stationary contacts at positions opposite thereto. The flexible member and the movable contacts of the first and second switches are integrally formed to have a uniform cross-sectional shape along one direction. The flexible member is deformed in response to the depression of a key. The stationary contacts corresponding to the movable contacts of the first and second switches are closed with a time difference according to a speed of key depression.
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Iwamoto Toshiyuki
Watanabe Keisuke
Nippon Gakki Seizo Kabushiki Kaisha
Scott J. R.
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