Seat cushions and body supports, and fitting instruments for the same
US5068504A · kind A · utility
Inventor
Key dates
| Filing date | Mar 1, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Mar 1, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/168
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A peak pressure sensor, for insertion between a body support pad or the like and an anatomical portion supported thereon, has a envelope, pliable electrically conductive sheets on opposite inner surfaces of the envelope, conductors for connecting each sheet to an alarm circuit, and a fluid pressurizing the envelope to a predetermined internal pressure so as to normally hold apart the conductive sheets. The sheets are movable into electrical contact by sufficient pressure applied locally to any relatively small portion of a sensing area on the exterior of the envelope, thereby to detect a peak pressure on the anatomical portion in excess of the internal envelope pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.