Axial flow valve

Details Axial flow valve Axial flow valve

1978-07-24

1980-07-22

Franklin, Lawrence R.

Music

Instruments

Wind

84396, G10D 904

Patent

active

042133718

ABSTRACT:
A rotary valve for selectively inserting and removing a slide loop from the sound path of a musical instrument is disclosed. The valve includes a rotor having two sound passages extending therethrough, one of the passages being straight and the other being only slightly curved. These passages align axially with the instrument's lead pipe, main bore, and slide loop ends so that a minimum of undesired harmonics are added to the tone of the instrument due to presence of the valve in the sound path.

REFERENCES:
patent: 105059 (1870-07-01), Fietz
patent: 455562 (1891-07-01), Gates
patent: 1703411 (1929-02-01), Steinmetz
patent: 3886837 (1975-06-01), Veneklasen
patent: 4112806 (1978-09-01), Thayer

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