Ventilated body support
US4391009A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1980 |
| Grant date | Jul 5, 1983 |
| Priority date | — |
| Expiry date | Oct 17, 2000 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G7/05784
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a ventilated support for living bodies comprising an inflatable alternating pressure pad which is either enclosed by or forms a part of an air permeable plenum chamber through which air is pumped at low pressure to provide a source of ventilating air to a body resting on the support. The alternating pressure pad which is inflated by a high pressure pump has two sets of interdigitated cells which are alternately inflatable and deflatable and carry the weight of a body, alternately, on each of the two sets of cells. The plenum chamber is provided with a separate low pressure air pump which passes through the air permeable upper element of the plenum chamber to reduce moisture build-up and otherwise cool the body resting on the support. In the embodiment in which the alternating pressure pad forms the upper element of the plenum chamber, it is provided with a plurality of apertures which are sealed from the alternating pressure cells to prevent the loss of pressure therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.