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
Optical reflector assemblies for use optical rotary joints
Method and system for cascaded flashcopy zoning and algorithm and/or computer program code and method implementing the same
Methods and apparatus for audience measurement using global signature representation and matching
Log driven storage controller with network persistent memory
System and method for automatic decommissioning of network participants by closing select circuits in order to change a plurality of mechanical states of the network participants
Fault diagnosis based on design partitioning
Electrode systems, devices and methods
  Randomly Featured Patents
Thick and thin yarn and process therefor
Adjustable boat seat pedestal
Receiving device and integrated circuit for reception
Catalyst for polymerization of alpha-olefins
Furniture supporting system
1,5-diphenyl-1H-1,2,4-triazole-3-carboxamide derivatives and herbicidal composition containing the same
Process for the preparation of pyrazolo[1,5-a]-1,3,5-triazines and intermediates thereof
Hinge structure for a console box lid
Method of retrieving and editing distributed information
Linear compensating circuit