Patent ID: 8653347
Filing Date: 2014-02-18
Classification: G10D

Abstract:
1. An extension unit for the headjoint of an instrument of the flute family, said headjoint comprising an embouchure, a crown, a stopper, and a headjoint tube, and said extension unit comprising: (a) a tube of vibrant material, similar in radius to the free end of said headjoint tube; (b) said tube interposed between the free end of said headjoint tube and said crown, and coaxial to said headjoint tube; (c) said tube having a lateral length from about 5 millimeters to about 100 millimeters; and (d) said crown drawn against said extension unit and said extension unit drawn against the free end of said headjoint tube when said crown is received on a threaded stem attached to said stopper; whereby the vibrational length from said embouchure to said crown is extended by the vibrational length of said extension unit.