Resources Contact Us Home
Bidirectional check valve

Image Number 5 for United States Patent #6328052.

A valve for controlling fluid flow while permitting flow in only one direction includes a housing having a spherical central opening and connections to permit attachment to fluid flow lines at opposite ends of the housing. The spherical opening is configured to permit fluid flow through the housing. A spherical member is adapted to fit within the spherical central opening of the housing. The spherical member has an opening bored through its center and may be aligned with the housing connections to allow fluid communication between them and positioned perpendicular to the housing connections to prevent fluid communication between them. A rotation member is provided to operate in conjunction with the spherical member to rotate the spherical member within the housing. A closing member is mounted within the spherical member, and is sized to close off the opening bored through the center of the spherical member for one direction of fluid flow. A mounting member is used for connecting the closing member to the spherical member whereby the closing member normally blocks fluid flow through the opening bored through the spherical member in only one direction and opens to fluid flow in the other direction.

  Recently Added Patents
Identifying instances of media programming available from different content sources
Semiconductor device and method of forming protective structure around semiconductor die for localized planarization of insulating layer
Virtual closet for storing and accessing virtual representations of items
Wood preservation
Natural oil based marking compositions and their methods of making
Regenerable and non-regenerable sorbents for acid gas removal
  Randomly Featured Patents
Activated zeolite beta and its use for hydrocarbon conversion
Bi-section adjustable connector bridging an opened handrail
Method of making magnetic recording medium
Layered evaporator for use in motor vehicle air conditioners or the like, layered heat exchanger for providing the evaporator, and refrigeration cycle system comprising the evaporator
Driving device and liquid crystal display device
Shield structure for information technology equipments
Armrest assembly having a position adjusting function
Controller for fuel cell system
Method of manufacturing a semiconductor device with a bipolar transistor
Clamping apparatus with bi-directional clamping device