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
Bull stationery tab
Listing recommendation using generation of a user-specific query in a network-based commerce system
Soybean cultivar CL1013675
Semiconductor device
Method for producing cathode active material for a lithium secondary battery
Novelty headband
Transmission device
  Randomly Featured Patents
Primer coating compositions comprising polyalkyleneimine and cellulose-acetate propionate
System and method for providing management of fabric links for a network element
Method for conveying a flexible thread by means of pressurized gas
Projectile intended to be fired by a fire-arm
Combined lighter and cigar/cigarette filter perforator
Waveguide and attenuation pole waveguide bandpass filter
Easy oyster opener
Windshield repair apparatus including bridge and injector holder
Object recognition apparatus
Process and apparatus for the transformation of yarns and a yarn thus produced