School bus door/service brake interlock system
US6758298B2 · kind B2 · utility
17Cited by
17References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2001 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Jun 13, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2022/4883
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A bus door/service brake interlock system having a warning system is provided. The interlock system includes a foot valve assembly to effect a service brake application when warning lights are activated, a vehicle door is open, and minimum speed conditions are met. An auxiliary line is positioned between a source of pressure and the foot valve assembly and includes a valve and a low pressure indicator. Should the operator leave the driver seat with the interlock system engaged, the parking brake is automatically applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.