Shell-within-a-shell magnetic toy construction block
US11224821B2 · kind B2 · utility
7Cited by
58References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Jun 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F7/0221
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic toy construction block includes an inner shell and an outer shell which are arranged to form a module having a shell-within-a-shell construction. Disc-shaped magnets are rotatably received and maintained in pockets formed in the inner shell of the module. The inner shell is permanently housed within the outer shell such that the magnets lie in close proximity to its sidewalls and hence sidewalls of the module itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.