Playground apparatus
US5733225A · kind A · utility
2Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1996 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Jun 4, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2208/12
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A playground apparatus is disclosed which includes four upright posts secured in the ground in a square configuration. Playground apparatus further includes four curved beam members formed from substantially rigid material, each of which is pivotally connected at its midpoint. The adjacent ends of the beams are interconnected by a resilient spring assembly, and the assembled beams define a ring-like support surface upon which children can stand and jump, producing undulating and resilient motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.