Spark-emitting device for a skateboard
US7942428B2 · kind B2 · utility
2Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Sep 7, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63C2203/14
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A spark-emitting device for a skateboard. The spark-emitting device includes a housing and a plurality of misch metal barrels inserted into a housing and spaced apart so that the wear rate of the housing in the misch metal barrels is compatible and a desired sparking effect is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.