US 11,721,310 B2
Self-locking string tuner and method therefor
William B. Cardozo, Ketchum, ID (US)
Filed by William B. Cardozo, Ketchum, ID (US)
Filed on Mar. 10, 2021, as Appl. No. 17/197,119.
Prior Publication US 2022/0293070 A1, Sep. 15, 2022
Int. Cl. G10D 3/147 (2020.01)
CPC G10D 3/147 (2020.02) 14 Claims
OG exemplary drawing
 
1. A self-locking tuner for a stringed musical instrument, comprising:
an inner string post;
an outer string post disposed over the inner string post, wherein the outer string post includes an opening for accepting a string;
a locking pin extending above the inner string post and through the outer string post to the opening; and
an insert disposed around the outer string post, wherein the insert includes a stop to unlock the string
wherein the insert includes a tab to prevent rotation of the insert;
wherein the insert is disposed in a headstock of the stringed musical instrument with the tab disposed in a slot formed in a surface of the headstock.