Music box
US9842575B1 · kind B1 · utility
0Cited by
2References
9Claims
0Family size
Inventor
Key dates
| Filing date | Jun 9, 2017 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | Jun 9, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10F1/06
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A music box includes a box, an operation unit, multiple activation units and a comb member. A circuit board controls a coil in a desired one of the activation units to create a magnetic field with the magnetic plate so as to attract the activation plate to be matched with the match plate. The attached activation plate and the match plate are rotated by a shaft extending through the activation units. The shaft is driven by a driving member. Each activation plate includes fingers which push the keys of the comb member to generate sound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.