Inflatable bed
US4803744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1987 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | May 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S5/94
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention is concerned with an improved air bed system. In this invention, the bed occupant can control the firmness of the bed. Two inflatable bladders are used with a pre-set pressure differential between them. The pressure in the lower bladder is always kept high enough to prevent bottoming of a bed occupant. The pressure in the upper bladder can be adjusted by the occupant to his or her own personal comfort level. The invention may also include various medical devices which are fluid powered, thus taking advantage of the presence of the pressurized working fluid. The invention may further include a warning circuit which senses the departure of an occupant from the bed and generates a warning signal in response thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.