Piano action with articulated jack
US6232537A · kind A · utility
8Cited by
14References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Jun 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10C3/16
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A piano keyboard apparatus has an action assembly that includes a four bar linkage having four pivotably connected bars including a whippen pivotably connected to a repetition lever. An articulated jack has a lower link pivotably connected to an upper link and the lower link is pivotably connected to the whippen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.