Keyboard device for an electronic musical instrument

Details Keyboard device for an electronic musical instrument Keyboard device for an electronic musical instrument

1978-06-08

1980-02-05

Witkowski, S. J.

Music

Instruments

84DIG7, 200 5A, 340365R, 340365S, G01H 100

Patent

active

041866380

ABSTRACT:
A keyboard device for an electronic musical instrument made according to the applicant's invention comprises a printed circuit board formed with pairs of stationary contacts corresponding to respective keys and a common movable contact member made of elastic rubber and disposed over the circuit board for connecting each pair stationary contacts. The common movable contact member is used for plural pairs of stationary contacts and on-off condition of each key switch is detected in time division. The movable contact member is simply placed in position on the printed substrate and holding members are provided on a keyboard frame for restricting lateral expansion of the movable contact member which takes place when the movable contact member is brought into contact with the stationary contacts by depression of the keys.

REFERENCES:
patent: 3735012 (1973-05-01), Hirano
patent: 3932722 (1976-01-01), Obata et al.
patent: 3965789 (1976-06-01), Pearlman
patent: 4079651 (1978-03-01), Matsui
patent: 4111091 (1978-09-01), Hinago
patent: 4117279 (1978-09-01), Schoemer

Affiliated with

Also associated with

Rating

Keyboard device for an electronic musical instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Keyboard device for an electronic musical instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyboard device for an electronic musical instrument will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2175891