Note release control method for solenoid actuated piano actions
US6153819A · kind A · utility
2Cited by
4References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Apr 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10F1/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for eliminating or reducing noise created by the action mechanisms of piano keys during its return stroke after striking a string, by regulating the amount of time for the mechanism to return to rest. The method comprises the steps of sequentially initiating a pair of braking pulses by the actuator solenoid to slow the action mechanism during its return stroke. Each braking pulse is of a specified duration and magnitude such that the mechanism's return time is maximized while eliminating the possibility of double hits on the string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.