Touch control apparatus for electronic keyboard instrument

Details Touch control apparatus for electronic keyboard instrument Touch control apparatus for electronic keyboard instrument

1985-01-25

1986-10-07

Perkey, William B.

Music

Instruments

84DIG7, 84DIG24, 340365A, 338 69, 338 99, 338114, 310338, G10H 134, H01L 4108, H01C 1010

Patent

active

046152520

ABSTRACT:
A touch control apparatus for an electronic keyboard instrument, comprises a sensor having: an elongated insulating sheet having a set of conductive pattern films on a surface thereof, the elongated insulating sheet being folded and the set of conductive pattern films being formed to be spaced apart from each other; and a pressure-sensitive element sandwiched in a space defined by the folded elongated insulating sheet to be in contact with the conductive pattern films. The pressure sensitive element is deformed when a key of the instrument is depressed to deliver an electrical output through the conductive films representing the magnitude of the key depression. The apparatus is superior in easiness of handling the sensor and of assembling the apparatus.

REFERENCES:
patent: 4027569 (1977-06-01), Luce et al.
patent: 4314228 (1982-02-01), Eventoff
patent: 4378721 (1983-04-01), Kaneko et al.
patent: 4499394 (1985-02-01), Koal
Japanese Utility Model Laid Open Specification No. Sho50-121726.
Japanese Utility Model Laid Open Specification No. Sho59-9399.

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