Blade sharping device for a lever harp
US6080921A · kind A · utility
4Cited by
4References
21Claims
0Family size
Inventor
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10D3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sharping device for shortening the length of a vibrating string on a lever harp is described. The device consists of an adjustable, freestanding fret in combination with a plastic, rotating blade sharping lever, which the harp player activates by the push of one finger. When rotated, the lever causes a vibrating string to be stopped against the fret. Both lever and fret are located along the neck of a harp so as to raise the frequency of a vibrating string by one semitone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.