Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Fluid flow control apparatus










Image Number 11 for United States Patent #8220478.

A main control valve is actuated by a pilot fluid control signal between open and closed positions to supply fluid to an actuator such as a valve actuator. A stack of logic control valves is supported on the main valve- and controls the flow of the pilot signal. Each of the logic control valves has a housing of common design. Intermediate flow-directing plates of different designs provide fluid communication between adjacent housings. The stack has a common pilot feed passage and a common exhaust passage that are each defined by an annular clearance around supporting tie bars that pass through bores in the stack. Each plate has apertures that form part of the exhaust and pilot feed passages and an aperture that interconnects the returning pilot signal with the pilot inlet of the next valve in the stack. The arrangement allows for simplification of the design of the apparatus with a single housing design and multiple plate designs.








 
 
  Recently Added Patents
Video processing system and device with encoding and decoding modes and method for use therewith
Methods and systems for automated segmentation of dense cell populations
Hybrid interconnect scheme including aluminum metal line in low-k dielectric
Process for preventing polymerization of cracked volatile products during pyrolysis and gasification
Support member, rotation device comprising such a support and rolling bearing assembly including such a detection device
Sink
Emergent information database management system
  Randomly Featured Patents
Method and apparatus for assembling exterior automotive vehicle body components onto an automotive vehicle body
Shelf construction
Abrasion resistant ferro-based sintered alloy
Hydrogenative treatment of coal
Airfoil
Method and apparatus for producing a screen-printing stencil
Methods for prolonging survival of platelets using UDP-galactose
Watch case
Radiopaque graphics
Method and apparatus for generating random numbers for use in a field programmable gate array