Wells – Above ground apparatus – With assembly or disassembly means
Reexamination Certificate
2007-07-17
2007-07-17
Tsay, Frank (Department: 3672)
Wells
Above ground apparatus
With assembly or disassembly means
C166S055000, C166S055100
Reexamination Certificate
active
10998378
ABSTRACT:
An improved shear/seal ram assembly used in ram-type BOPs is disclosed. The disclosed invention is a unique shear/seal ram assembly in which rail seal actuators attached to or integrally formed in a planar surface of one shear blade mate with and slide within corresponding rail guide grooves formed in a planar surface of a second shear blade. As the shear blades move over each other, the rail seal actuators slide within the rail guide grooves, eventually coming into contact with a seal actuator plate of a unique blade-to-blade seal assembly placed within a shear blade seal groove. Continued movement of the shear blades over each other causes the rail seal actuators to compress, or “energize,” the blade-to-blade seal of the blade-to-blade seal assembly, thereby providing a pressure tight seal between the shear blade assemblies.
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Cordova Noe Tony
Gilleylen Russell C.
Hiebeler Harry P.
Isaacks C. Steven
Livingston Jimmy
Howrey LLP
National-Oilwell DHT, L.P.
Tsay Frank
LandOfFree
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