Patent ID: 7148411

Claim:
An adjustable tuning tube for a clarinet comprising: an outer tube having a first upper chamber defined at an upper portion of the outer tube, a lower chamber defined at a lower portion thereof, a middle portion between the first upper chamber and the lower chamber, an arcuate slot transversally defined at an outer periphery of the middle portion of the outer tube, an opening defined in a face defining the arcuate slot and through the outer tube, a button pivotally mounted in the arcuate slot and having a finger formed at a first end of the button and extending in the outer tube through the opening, and multiple first teeth formed at an inner wall of the finger; and an inner tube having an upper part received in the first upper chamber of the outer tube, a lower part received in the middle portion of the outer tube, a second upper chamber defined at the upper part of the inner tube, and multiple second teeth formed at the lower part of the inner tube and matching the first teeth of the button.