Reduced friction piano action pins
US7638696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2007 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10C3/125
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.