Method and apparatus for determining the status of a relief valve
US6408676B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Mar 31, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/87
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention provides an apparatus and method for determining a status of a relief valve located within a fluid system having a pump and an actuator valve. The fluid system 102 is located on an earth moving machine, and the pump delivers fluid to the actuator 110, 112 through the actuator valve 108. The system 102 includes a pressure compensation assembly 130 adapted to control the fluid pressure of the system by bypassing fluid flow. The system 102 also includes a relief valve, and a pressure sensor. The method includes the steps of positioning the actuator valve in a closed position, deactivating the pressure compensation assembly, and sensing a relief pressure of the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.