Air mattress with audible pressure relief valve
US4788729A · kind A · utility
Inventor
Key dates
| Filing date | Jan 9, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Jan 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8326
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An air mattress is equipped with a combined one-way air pressure relief valve and audio device operable to limit the air pressure in the air mattress to about 1 psi to prevent seam separation and blow-out. Air flowing out of the mattress through the combined air pressure relief valve and audio device produces an audible sound. The mattress has top and bottom walls joined to side and end walls with edge seams. The combined air pressure relief valve and audio device is located within the chamber of the air mattress so that external structures do not interfere with the functioning of the valve and audio device. In one arrangement, a boot secures the combined air pressure relief valve and audio device to the inside of an end wall. In a second arrangement, the combined air pressure relief valve and audio device is located within a seam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.