Resources Contact Us Home
Non-orienting tree cap

Image Number 4 for United States Patent #7621338.

A wellhead assembly includes a tree cap having a production mandrel extending down into a production passage of a Christmas tree to form a seal. The tree has an annulus bore and an annular cavity at the upper end of the tree surrounding the upper ends of the production and annulus bore. A communication gallery leads between the annulus bore and the cavity. The tree cap also includes an annular sealing member that enters the cavity for sealing a communication gallery.

  Recently Added Patents
Network traffic demotion
Systems and methods for switching supply load current estimation
Method and system for a low-power client in a wide area network
Method of applying a spherical correction to map data for rendering direction-of-travel paths on a wireless communications device
Terminal device and image printing method
Method of hydrothermal liquid phase sintering of ceramic materials and products derived therefrom
  Randomly Featured Patents
Seizure prediction and neurological disorder treatment
Boundary microphone
Detail-in-context lenses for digital image cropping, measurement and online maps
Method of manufacturing a motor core
Pipe coupling
Air compressor
Vehicle shift module
Sealed battery having an electrode substrate exposed portion extending from the electrode assembly
Thermosensitive recording medium
Over-current protection circuit