Reduced friction piano action pins

Details Reduced friction piano action pins Reduced friction piano action pins

2007-06-19

2009-12-29

Qin, Jianchun (Department: 2832)

Music

Instruments

Stringed

C084S239000

Reexamination Certificate

active

07638696

ABSTRACT:
An improved key pin and action pin that is resistant to corrosion, is very durable and has surfaces with a very low coefficient of friction. The pins are preferably made of aluminum or aluminum alloy with a hardened anodized oxide surface. The anodized pins may be polished to provide a surface with a very low coefficient of friction that is also very durable. As a consequence of the low friction and corrosion resistance, piano actions using the pins have less resistance providing an action with a lighter “feel” and consistency. Longevity of the components of the action and the pins is also greatly improved especially for pianos located in humid climates where traditional pins experience corrosion.

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patent: 2006/0174753 (2006-08-01), Aisenbrey
patent: 16222126 (2006-02-01), None
patent: 1488782 (1977-10-01), None
Aluminum Anodizers Council. Hardcoat Anodizing, at <http://web.archive.org/web/20000516171324/htp://anodizing.org/hcwebdoc.htm>, May 16, 2000, retrieved Dec. 10, 2007.

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