Patent ID: 7638696
Filing Date: 2009-12-29
Classification: G10C

Abstract:
1. A low friction piano key action, comprising: a front rail; a balance rail; a piano key; a front rail pin coupling said piano key to said front rail; and a balance rail pin coupling said piano key to said balance rail; wherein each said pin comprising an essentially cylindrically shaped body with an outer surface, a first end and a second end, wherein said essentially cylindrically shaped body further comprises a single notch, said notch being a longitudinal segment of said essentially cylindrically shaped body with a smaller outside diameter than that of the rest of said essentially cylindrically shaped body, said longitudinal segment having an essentially cylindrical shape, a common longitudinal axis with said essentially cylindrically shaped body, and a length of 0.1-10 percent of the total length of said essentially cylindrically shaped body; wherein each said pin having a hardened oxide layer formed on said outer surface.