Steering wheel
US5002306A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Feb 14, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q5/003
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air bag device is provided on upper side of a boss portion. The air bag device comprises an air bag, an inflater supplying gas to the air bag, a backup plate holding the air bag and the inflater, and a pad in box shape for covering the air bag. A thin breaking portion is formed on an upper wall of the pad so as to break the upper wall in state of connecting the upper wall to the side wall when the air bag is expanded, and a plurality of membrane switches comprising a pair of electrodes in thin film shape are arranged at portions of the upper wall of the pad except for the breaking portion. A connector connected to a prescribed electric circuit at lower side of the boss portion and the membrane switches are electrically connected by lead wires arranged along a pad side wall portion in state of connecting the pad upper wall when the pad upper wall is broken.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.