Inflatable cushion
US5638565A · kind A · utility
115Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1995 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Apr 7, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G7/057
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An inflatable multi-layer body support cushion, adapted to buffer or dampen the fluid reaction to forces applied to the upper surface of the cushion, includes a plurality of adjacent cells of generally hourglass configuration defined by vertically stacked upper and lower chamber portions and medial neck portion. The laterally adjacent chambers are interconnected for the intralayer fluid flow therebetween. The vertically adjacent chambers are interconnected in the neck portion of the cells by orifices which control the interlayer fluid communication between the upper and lower chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.