Valve unit for a brass musical instrument

Details Valve unit for a brass musical instrument Valve unit for a brass musical instrument

1986-04-23

1987-08-11

Franklin, Lawrence R.

Music

Instruments

Wind

84390, G10D 904

Patent

active

046853723

ABSTRACT:
In construction of a single valve unit for a brass musical instrument having blow-in and blow-out tubes, and multiple resonant tubes, rotation and axial displacement of a piston in a cylinder switches communication between the blow-in and blow-out tubes and the resonant tubes. Compared with prior art double valve units, the present signal valve unit simplifies valve construction, avoids the need for phase adjustment, between two valves and reduces fatigue on the operator.

REFERENCES:
patent: 1821641 (1931-09-01), Johnson

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