Patent Number: 7,786,372

Title: Wind musical instrument with pitch changing mechanism and supporting system for pitch change

Abstract: Three valve assemblies are linked with finger buttons and inserted into a pipe structure of a trumpet for changing the length of air column, and a supporting system assists a player in fingering on the finger buttons; sensors are adhered to the finger buttons so as to supply a detecting signal representative of force exerted on the finger buttons by the player to a controlling unit; when the force exceeds over a threshold, the controlling unit energizes actuators connected to the valve assemblies so as to make the player feel the valve assemblies lightly changed.

Inventors: Sawada; Shuichi (Shizuoka-ken, JP), Suzuki; Hideo (Shizuoka-ken, JP), Komatsu; Akihiko (Shizuoka-ken, JP), Yaguchi; Nariyasu (Shizuoka-ken, JP), Hayashi; Yoshinori (Shizuoka-ken, JP), Takigawa; Souichi (Shizuoka-ken, JP)

Assignee: Yamaha Corporation

International Classification: G10H 3/00 (20060101)

Expiration Date: 8/31/12018