Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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 apparatus for providing seamless call handoff between networks that use dissimilar transmission methods
IR(voltage) drop analysis in integrated circuit timing
Error scanning in flash memory
Determination of statistical upper bound for estimate of noise power spectral density
Information processing apparatus capable of authentication processing with improved user convenience, control program for information processing apparatus, and recording medium having control
Pharmaceutical compositions of entacapone, levodopa and carbidopa with improved bioavailability
Power storage device and method for manufacturing the same
  Randomly Featured Patents
Lawn logos
Multiple level quantizer
Load-limiting seat
Signalling method for establishing trunked communication
Policy based composite file system and method
Connecting material and mounting method which uses same
Integrated circuits based on aligned nanotubes
Can bottom
Method for handling connectors
I/O modular terminal having a plurality of data registers and an identification register and providing for interfacing between field devices and a field master