Brake valve control system
US5044697A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | May 26, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C25/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The brake valve control system for an aircraft wheel bracking system includes primary and backup brake valve control subsystems and isolates and switches between subsystems. Certain portions of the entire braking system are shared, and those portions which are not shared are isolated but interconnected for switching from a primary brake control mode to a backup subsystem upon failure of the primary subsystem. A unique metering spool valve, and the linking of metering spool valves and servocontrol valves with either a tandem selector valve or interlinked primary and secondary selector valves allows for significant reduction in weight and complexity for the backup or override system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.