Electronic equalizing reservoir controller with pneumatic penalty override
US6746087B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | May 14, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T15/302
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control system which allows electro-pneumatic control of an equalizing reservoir with the capacity to create penalty applications in a purely pneumatic manner. A controller for the equalizing reservoir includes an electro-pneumatic source of pressure or atmosphere responsive to an electrical equalizing pressure control signal and a pilot valve selectively connecting the electro-pneumatic source or atmosphere to the equalizing reservoir in response to pressure in a pilot port of the first pilot valve. A magnetic valve is provided having a first input connected to a second source of pressure, a second input connected to atmosphere and an output connected to the pilot port of the first pilot valve. At least one penalty valve is connected to the pilot input of the first pilot valve and is responsive to a penalty signal to connect the pilot input to atmosphere. The pilot valve and the penalty valve pneumatically produce a brake application regardless of the state of the magnetic valve or its controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.