Action for piano
US7279627B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 2006 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Apr 20, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10C9/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An action for a piano is provided for clarifying a timing of let-off, improving the sequential touching capabilities, and consequently realizing high playing performance excellent in expressive power in a simple structure without adversely affecting the key touch feeling. The action for a piano swings a hammer in response to a touch on a key, and comprises a wippen pushed up by the key to pivotally move, a regulating button having a flat jack contact surface on the lower end, and a jack having a flat regulating button contact surface which comes into contact with the jack contact surface as the key is depressed. The jack comprises a molding made of a thermoplastic resin containing long fibers for reinforcement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.