The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 1997
Filed:
Nov. 16, 1994
Applicant:
Inventors:
Hikaru Hashizume, Hamamatsu, JP;
Yutaka Washiyama, Hamamatsu, JP;
Assignee:
Kabushiki Kaisha Kawai Gakki Seisakusho, Shizuoka-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01H / ; G01H / ; G01H / ; G01H / ;
U.S. Cl.
CPC ...
84742 ; 84723 ; 84743 ;
Abstract
A wind instrument is provided with electronic tubing control. The wind instrument has at least a pair of an acoustic sensor and an acoustic actuator in a straight pipe portion of a wind instrument and an electronic control for supplying a delayed output of the acoustic sensor to the actuator to electronically control a change in pressure in a pipe by variably changing the delay amount in correspondence with a performance of the instrument thereby electronically changing the pitch of a produced musical tone.