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
Battery structures and related methods
Grounding fitting
Electronic flash device
Method and system for determining an optimal missile intercept approach direction for correct remote sensor-to-seeker handover
Solid state lighting devices with cellular arrays and associated methods of manufacturing
Multi-radio coexistence
  Randomly Featured Patents
Phased array antenna and its manufacturing method
X-ray tube
Method for determining the salt content of liquid and device for carrying out said method
Process for preparing fructose from starch
Regulating system
Surgical access device with floating gel seal
Error correction apparatus
Refrigerated showcase
Optical device and method for fabricating the same, camera module using optical device, and electronic equipment mounting camera module
Apparatus for aligning and/or retaining pallet to be repaired and/or pallet elements