Resources Contact Us Home
Blade seal for a shearing blind ram in a ram type blowout preventer

Image Number 4 for United States Patent #6158505.

A blade seal for a shearing blind ram designed for use in a standard ram-type blowout preventer used in oil and gas drilling operations is disclosed. The blowout preventer has a body with an axial bore, a pair of opposing bonnet assemblies and a pair of opposing rams laterally moveable within the bonnet assemblies by a pressurized fluid source to control flow of well fluids through the blowout preventer body axial bore. The blade seal includes a generally planar shaped central member that tapers from one end to the other and is constructed of rubber. A pair of metal caps are bonded to the lateral edges of the blade seal to aid in preventing extrusion. The lower face of the rubber central member includes a groove adjacent to the metal cap to aid in preventing extrusion of the rubber. A pair of the blade seals is used in the upper ram of the shearing blind ram assembly. The opposing lower ram has a upwardly facing surface that seals against the pair of blade seals after the pipe is sheared.

  Recently Added Patents
Expressive grouping for language integrated queries
Voltage regulator with improved voltage regulator response and reduced voltage drop
Image processing apparatus and image processing method
Pattern transfer apparatus and method for fabricating semiconductor device
High-order harmonic device of cavity filter
Glow in the dark swim goggle frame and band
Method of operating an election ballot printing system
  Randomly Featured Patents
Multi-function media eject system in an ink jet printer
Method of making shaft seal with clinch-butt metal case
Liquid crystal ester compounds exhibiting a low or negative dielectric anisotropy and liquid crystal materials and devices incorporating such compounds
Trapping apparatus
Apparatus for securing a surface
Device for centrifugal casting of hollow body with asymmetrical cross-section
Coaxial power module
Method and device for producing cigarette packs
Hydraulic compression tool for installing a coaxial cable connector and method of operating thereof
Automatic dishwashing detergents comprising .beta.-ketoester pro-fragrances