Pulsating inflatable-deflatable pad assembly and method
US4280487A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1979 |
| Grant date | Jul 28, 1981 |
| Priority date | — |
| Expiry date | Jul 5, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G7/05776
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method are disclosed for promoting the evaporation of perspiration from an absorbent sheet of foam or other material covering an inflatable-deflatable patient-supporting bed pad. The pad has a multiplicity of perforations in its top wall which communicate with a pair of interlaced passages or chambers within the pad. By pulsing the air supplied alternately to each chamber of the pad at a frequency within the range of about 15 to 65 pulses per second, the perforations provide a multiplicity of tiny puffing or pulsing jets of air into the foam sheet to promote the evaporation of moisture from that sheet. Means for overlapping the inflation-deflation cycles is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.