Air mattress
US6546580B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Oct 23, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G7/05776
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An air mattress includes a first through a fourth sheets (6, 7, 8, and 9), respectively, which are bonded together along the peripheries thereof and at a multiplicity of bonding spots, creating a triple-layer air cell structure consisting of a first, a second, and a third air cells (13, 15, and 17), respectively. A multiplicity of first bonding spots (10) bonding the first and second sheets together are spaced apart at regular intervals along longitudinal and transverse lines such that four neighboring spots occupy four corners of a tetragon. On the other hand, a multiplicity of second bonding spots (14) bonding the second and the third sheets together are arranged at positions which correspond to the centers of the tetragons. The third air cell has the same structure as the first air cell. These air cells are inflated such that the third air cell maintains high a pressure, while the first and second air cells maintain a low pressure. The low pressure air mattress may effectively prevent bedsores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.