Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Valve actuator system










Image Number 3 for United States Patent #6651686.

An actuator system for a system valve exposable to a source of system pressure. A piston within a sensing vessel is caused to move longitudinally from a first position to a second position in response to a designated system pressure. A first piston stem carried by the piston is mechanically coupled to an actuator control valve, which is interposed in a fluid path between an actuator and a source of actuator pressure. Movement of the piston from its first to second position causes the coupled actuator control valve to block the fluid path linking the actuator and its pressure source, thereby causing a predetermined change in pressure at the actuator. As a result, the actuator shifts from its unactuated to its actuated state, thereby causing the system valve to shift from a first system valve position to a second system valve position.








 
 
  Recently Added Patents
Transmitter and receiver for streaming media including packet padding
Phenethanolamine derivatives for treatment of respiratory diseases
Converter and measuring apparatus
Touch screen panel
Liquid crystal display and method of driving the same
Wide bandwidth hybrid antenna for combination EAS and RFID label or tag
Method of sheet alignment and method of post-processing comprising the same and method of image formation
  Randomly Featured Patents
Liquid cleaner-disinfectant composition for use in wiping down dental operatories
Unitized oil cooler and filter assembly
Manually extendable telescoping antenna
Stabilization and control of hot two phase flow in a well
Software authorization utilizing software reputation
Silicon carbide power devices having trench-based silicon carbide charge coupling regions therein
Apparatus and method for determining machine operator status
Safe-arm system with electrical charge transfer circuit
Method and apparatus for an equalizing buffer
Scoping queries in a search engine