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US 4,392,408 AGranted
Recorder training device
OwnerManji Suzukiinventor
Life of this patent
Estimating the term…
Abstract
A recorder training device comprising a recorder body having a plurality of tone holes provided with a couple of electrodes opposingly disposed around them such that the electrodes may be indicated by electric lights on the corresponding tone hole figures of a recorder pattern shown on an indicator plate, or on the electric lights on the musical scales of a music score pattern indicated on an indicator plate.
Claims3
A musical recorder training device comprising:
- a recorder body having a plurality of tone-controlling openings;
- a plurality of electrode pairs, the electrodes of each electrode pair being disposed on opposite sides of a respective tone-controlling opening such that closure of a tone-controlling opening with a finger tip provides an electric current path between a respective electrode pair through that finger tip, the electrodes in each pair being positively fixed relative to one another;
- a plurality of terminals, at least one terminal being provided for each electrode pair and at least one additional terminal;
- a plurality of metal conductors secured substantially along their entire lengths to said recorder body, each conductor extending between a respective terminal and one electrode in a respective electrode pair;
- a further metal conductor secured substantially along its entire length to said recorder body, said further conductor extending between said additional terminal and the other electrodes of said electrode pairs;
- a plurality of electric lamps;
- and
- circuit means connecting each of said electric lamps to a respective terminal of said plurality of terminals for selectively energizing each lamp as a function of the open and closed condition of each tone-controlling opening, respectively;
- wherein said tone-controlling openings are circular holes and wherein each electrode extends arcuately and substantially concentrically about a portion of respective tone-controlling openings.
6 more elements
Dependencies are inferred from the claim text.