Resources Contact Us Home
Pneumatic relay valve

Image Number 2 for United States Patent #4480663.

The invention relates to a pneumatic relay valve for regulating output pressure in proportion to a control pressure.The relay valve includes a first piston member which is acted on by the control pressure and a second piston member which is acted on by the input pressure.A compression spring is located between the two relay piston members.The strength of the compression spring determines the height of a predetermined minimum controlled pressure even if the input pressure is subsequently lost or drops to a low value.In addition, the output pressure of a receiver can be maintained at a specific adjustable level which may be below the maximum pressure value of the input pressure due to the compression spring located between the two relay piston members.

  Recently Added Patents
Behavioral fingerprint based authentication
Statistical information collection from one or more device(s) in storage communication with a computing platform
Packet transmission method, apparatus, and network system
Encoding digital content based on models for predicting similarity between exemplars
System for controlled release of an active principle and method for preparation
Compositions for inhibiting NADPH oxidase activity
  Randomly Featured Patents
Multi-threaded processing of system management interrupts
Tire inspection apparatus
Composition and method for preparing granular amino acid chelates and complexes
Method of manufacturing semiconductor integrated circuit device, and semiconductor integrated circuit device made by its method
Contoured foot for ambulatory aid
Repeatability of CVD film deposition during sequential processing of substrates in a deposition chamber
Filtered showerhead
Silicone rubber mold
Method and apparatus for measuring use of a substrate in a microbially catalyzed reaction
System for detecting and removing a gas bubble from a vascular infusion line