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

Image Number 5 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
Method and device for processing broadcast packets/multicast control messages
Systems and methods for analyzing telecommunications invoices for payment
System for thermally controlling displays
Image reproduction system and image reproduction processing program
Method and apparatus for supporting management actions for very high throughput in wireless communications
Tomlinson Harashima precoding with additional receiver processing in a multi-user multiple-input multiple-output wireless transmission system
Cosmetic or pharmaceutical peptides containing uncoded amino acids and their use in the treatment and/or care of the skin, mucous membranes, or scalp
  Randomly Featured Patents
Absorbable surgical fastener
Method for producing protein in a cell-free system
Light source system
Mechanism for processing and offering tapepaks for automatic equipping units
Enterprise information evolution analysis system
Semiconductor device including a fuse circuit in which the electric current is cut off after blowing so as to prevent voltage fall
Adaptive control for power growth in an engine equipped with a hydraulically-actuated electronically-controlled fuel injection system
Method for assessing improvement in hand hygiene practices
Dual mode satellite/cellular terminal
Apparatus for recording multiple, superimposed, independent images on microfilm