Shock displacing inflatable bag
US5713817A · kind A · utility
Inventor
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2225/62
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A shock-displacing inflatable bag for use in balance games, recreation or exercise comprises a bag constructed of material that does not stretch or otherwise absorb shock. The bag is formed from a single sheet of material which is first joined at a set of opposite edges using a lap seam. The lap seam allows the bag to roll from side to side without restriction. The two open ends of the bag are then joined using sandwich seams. A valve is then mounted over a hole in the bag for purposes of inflation and deflation. Radio frequency heat sealing provides a method for creating strong, permanent seams which can withstand forces imparted to the bag. Denser vinyl coated, woven fabrics provide the best resistance to shock and stretch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.