Valve mounted bottom out sensor
US7414536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2005 |
| Grant date | Aug 19, 2008 |
| Priority date | — |
| Expiry date | Jul 30, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G2203/34
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sensor for attachment to an inflatable air cell cushion to detect a change in immersion depth and bottoming out of the user seated on the cushion. The sensor includes an airflow conduit for attachment to the cushion inflation tube. The airflow conduit comprises a cylindrical body having a longitudinal inner bore. There is an opening through the conduit body in fluid communication with the bore. A transducer is positioned at the opening to detect changes in air pressure within the airflow conduit. The transducer is operatively connected to a warning light, an audible sensor and a mode set button. The functions of the electronic components are preprogrammed into a computer chip. A battery powers the sensor. The recited components are secured within a housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.