Vehicle wheel safety barrier system using pressure and infrared sensors
US5313189A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Sep 30, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/0067
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The safety barrier system prevents a person from being caught under a wheel of a vehicle and is provided with a sensing system to inform the driver of the presence of the person on the barrier during start up. The sensing system combines a first sensor (for example, a pressure sensor) with an infrared sensor, and includes a snow switch for selectively using the first sensor and/or the infrared sensor depending on the weather conditions. The barrier is mounted to the vehicle by a motor drive mechanism to lower the barrier when stopped and to raise the barrier after the vehicle has travelled a given distance. The system is particularly suitable for school buses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.