US 8,686,263 B2
Musical instrument
Kuo-Chang Chen, Taichung ( (Taiwan))
Filed by Kuo-Chang Chen, Taichung ( (Taiwan))
Filed on Jan. 19, 2012, as Appl. No. 13/353,618.
Prior Publication US 2013/0186257 A1, Jul. 25, 2013
Int. Cl. G10D 9/04 (2006.01)
U.S. Cl. 84—380R 7 Claims
OG exemplary drawing
 
1. A musical instrument, including:
at least one hinge tube, the hinge tube having a periphery surrounding the hinge tube, the periphery extending from one end to the other end of the hinge tube, the periphery forming at least one recess portion;
a body, the hinge tube being disposed rotatably on the body, the hinge tube being able to rotate on an axis of the hinge tube, the body has at least one tone hole;
at least one key, being disposed on the hinge tube and links-up with the hinge tube;
at least one valve, being disposed on the hinge tube and links-up with the hinge tube;
wherein the key and the valve move when the hinge tube rotates to enable the valve to open or to shut the tone hole.