Snowball maker
US4163639A · kind A · utility
8Cited by
6References
11Claims
0Family size
Inventors
Key dates
| Filing date | Dec 19, 1977 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Dec 19, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H33/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A snowball maker has opposed inner and outer cup-like shells which interfit to compact snow into a ball. The inner shell deforms, within outer shell, upon full insertion substantially to encircle the snow within the two shells. Upon separating the shells, the inner shell resiliently opens to its original shape for ready release of the compacted ball of snow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.