Resources Contact Us Home
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
System and method for deposition in high aspect ratio magnetic writer heads
Methods and apparatus to determine impressions using distributed demographic information
Non-zero rounding and prediction mode selection techniques in video encoding
Combining seismic data from sensors to attenuate noise
Systems for usage based rate limiting over a shared data link
System for alarming upon occurrence of secession of smart key for vehicles
Method for forming a film
  Randomly Featured Patents
Faraday rotator for high output lasers
Rock ditcher
Hot stamp machine for custom imprinting plastic identifier tags
Waterproof splice electrical connector
Electrical connector assembly
Capsule and method for treating or diagnosing the intestinal tract
Method for managing corrosion of an underground structure
Audio porting assembly
AGC Amplifier for ultrasonic measuring system
Solid state relay