Rotary valve for brass wind instruments

Details Rotary valve for brass wind instruments Rotary valve for brass wind instruments

1977-03-28

1978-06-20

Hix, L. T.

Music

Instruments

Wind

84452P, G10D 904

Patent

active

040955044

ABSTRACT:
A rotary valve for a wind brass instrument comprises, as usual, a housing having a cylindrical wall with four duct connecting pieces fixed thereto about the circumference thereof. It also comprises a rotating member including a continuous metal shaft with end portions forming journals, a middle portion having a core element made of plastic material which does not swell in a wet environment, a metal jacket snugly fitted upon the core element and forming a fluid-tight joint with the cylindrical wall of the housing, and one or more pins engaged in respective bores extending diametrically through the jacket, core and shaft.

REFERENCES:
patent: 3835748 (1974-09-01), Olson

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