Precision axial flow valve

Details Precision axial flow valve Precision axial flow valve

2011-03-22

2011-03-22

Qin, Jianchun (Department: 2832)

Music

Instruments

Wind

Reexamination Certificate

active

07910815

ABSTRACT:
The present invention relates to the field of brass wind musical instruments, and more specifically to an improved axial flow valve which resists wear and optimizes air flow.

REFERENCES:
patent: 2672783 (1954-03-01), Kaufer
patent: 3741248 (1973-06-01), Stevens, Jr.
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patent: 5900563 (1999-05-01), Leonard
patent: 6018115 (2000-01-01), Leonard
patent: 2004/0222400 (2004-11-01), McCarty et al.

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