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US 5,869,780 AGranted
Tuning pin apparatus having impediment function against the rewinding
OwnerWon Ki Liminventor
Life of this patent
Estimating the term…
Abstract
A piano tuning pin apparatus for prevention of loosening of the piano string, i.e., of rewinding of a piano tuning pin, characterized by setting the tuning pin constructed additionally a brake structure having the impediment function against the rewinding on the circumference surface of the piano tuning pin and the fixing portion of pin having two putting pipes each other, to prevent loosening of the piano. Between a tuning hammer tip inserting part and a hole of the tuning pin, a brake structure is formed to take a projection having a suitable distance and height along with a circumference surface.
Claims7
A tuning apparatus comprising:
- a tuning pin having a hole through which a string for tuning is to be strung;
- a brake structure, said brake structure including a plurality of projections;
- and
- a fixing member including two putting pipes, each of said putting pipes having an inner surface;
- a fixing die connected and positioned between said two putting pipes, said fixing die including a hole in the center of said fixing die;
- said tuning pin positioned within one of said putting pipes, the projections of the tuning pin engaging the inner surface of said one of said putting pipes impeding the tuning pin from rewinding.
3 more elements
Dependencies are inferred from the claim text.