Resources Contact Us Home
Flow control valve

Image Number 2 for United States Patent #5706849.

In a flow control valve, a valve spool is movable for variably controlling an opening area of a port portion of a drain passage so that a necessary flow rate of fluid is conducted from a first pressure chamber to an outlet passage through a control orifice while a surplus flow rate of fluid is returned from the first pressure chamber to the drain passage. A movable sleeve is installed in a valve spool accommodation hole and around the valve spool. The movable sleeve has through holes communicable with the drain passage and an inlet passage, respectively. The movable sleeve has a first axial end portion disposed in the first pressure chamber and a second axial end portion disposed in a low pressure chamber. A spring is disposed in the low pressure chamber for urging the movable sleeve toward the first pressure chamber side. The movable sleeve is movable relative to the valve spool in response to a variation of pressure in the first pressure chamber for varying the opening area of the port portion of the drain passage.

  Recently Added Patents
Apparatus and method for extracting cascading style sheet rules
Glow in the dark swim goggle frame and band
Sliding-type portable communication device
Method for olympic event hospitality program management
Print system
High dynamic range pixel structure
Method and device for determining a set of frequencies that can be used for transmitting information between radio transceivers of a network operating with frequency hopping
  Randomly Featured Patents
Skin permeation enhancer composition for use with sex steroids
Method and apparatus for pixel synchronization
Tap with spaced product and gas tubes
Lamp header with start-up conductor for an ultra high pressure bulb
Methods for the production of plastic lenses
Creating an electronic dictionary using source dictionary entry keys
Kinase and phosphatase assays
Pharmaceutical compositions containing antigen-antibody complexes and uses therefor
Ink set for inkjet recording and image recording method
Coated, labeled fluorescent lamp