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
Process to increase selectivity to ethylene in oxygenates-to-olefins conversions
Vehicle headlight
Method for distributing advertisements to client devices using an obscured ad monitoring function
Method and a system for registering a 3D pre-acquired image coordinates system with a medical positioning system coordinate system and with a 2D image coordinate system
Creating three dimensional graphics data
Liquid crystal display device
  Randomly Featured Patents
Rotary card file
Devices for storing and accumulating defect information, semiconductor device and device for testing the same
Method of determining azimuthal position of transverse axes of optical fibers with elliptical cores
Method and apparatus for reducing emissions from breather lines of storage tanks
Microwave oven and method of controlling the same
Solution and process for improving the solderability of a metal surface
Display apparatus and stand thereof
Parasitic nematode transglutaminase, nucleic acid molecules and uses thereof
Container filling device
Tablecloth or the like