Internal relief valve for a valve actuator
US9057448B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2010 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Sep 6, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7904
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for a pressure control system for an actuator is provided. In one embodiment, the pressure control system may include a housing defining an upper chamber and a lower chamber, and a piston disposed between the upper and lower chambers. A valve may be coupled to the piston that is operable to control fluid communication between the upper chamber and the lower chamber. In one embodiment, a method of controlling over-pressurization of an actuator includes supplying a fluid pressure to a first chamber of an actuator having a piston and actuating the piston using the fluid pressure. The method may further include relieving the fluid pressure from the first chamber through a valve that is coupled to the piston when the fluid pressure exceeds a predetermined maximum pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.