Electronic musical instrument
US8987576B1 · kind B1 · utility
3Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 7, 2013 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Apr 25, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2220/395
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An automatic tuning system for pendulum clocks provides for a separable magnet and ferromagnetic attractor, one positioned on the pendulum and one positioned off of the pendulum and adjustable to change the separation between the two. The magnetic attraction between these elements serves to simulate a changing gravitational force fundamentally affecting pendulum period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.