Keyboard apparatus of electronic musical instrument
US7696424B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2007 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Jan 12, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10C3/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A keyboard apparatus of an electronic musical instrument has a plurality of pivoting members (white key main body 1, black key main body 2, and massive body 28) which pivot in response to depression or release of keys, a frame 3 which supports the pivoting members, and action restricting members (lower limit stopper 5 and upper limit stopper 6) which cause collision thereof with the pivoting members to restrict a range in which the pivoting members are allowed to pivot. The action restricting member contains a plurality of grains 11 in an enclosure member 12, and is arranged, in a state where inflow and outflow of air are allowed between the closed area and outside air, at the frame's side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.