Musical instrument pneumatic actuator

Details Musical instrument pneumatic actuator Musical instrument pneumatic actuator

1985-04-30

1986-10-28

Fuller, Benjamin R.

Music

Instruments

Automatic

84 53, 84 61, G10F 102

Patent

active

046191771

ABSTRACT:
A musical instrument pneumatic actuator uses valve seats and a vacuum tube which are integral with one of two plastic main body pieces. An anti-warp brace and curved recessed portion are respectively used to minimize warpage and wear on the bellows. A beveled atmospheric port allows easy insertion of a valve piece.

REFERENCES:
patent: 913867 (1909-03-01), Wuest, Jr.
patent: 1041219 (1912-10-01), Wuest, Jr.
patent: 1208138 (1916-12-01), Giuliana
patent: 1238040 (1917-08-01), Maxwell
patent: 1298113 (1919-03-01), Spencer
patent: 1325912 (1919-12-01), Rogers
patent: 1423505 (1922-07-01), Gustafson
patent: 1533052 (1925-04-01), Wheatley
patent: 1681338 (1928-08-01), Gulbransen
patent: 3033068 (1962-05-01), Westfield
patent: 4145947 (1979-03-01), Joy

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