|
2017
|
P/S
|
Safety pigging module for launching cleaning pigs in pipes, namely, a manually-operated safety me... |
|
|
Invention
|
Display containers.
A disk display includes a vessel having a vessel cap on a first end of the v... |
|
|
Invention
|
Display containers.
A disk display includes a vessel having a vessel cap on a first en... |
|
|
P/S
|
Safety pigging module for launching cleaning pigs in pipes; |
|
2010
|
Invention
|
Pressure switch. A pressure switch is disclosed, comprising: a spool forming a pressure sensitive... |
|
2008
|
Invention
|
Pressure sensor with secondary seal. An apparatus for sensing pressure is provided comprising a h... |
|
|
Invention
|
Pressure sensor. An apparatus for sensing pressure is provided comprising a housing, electronics,... |
|
2004
|
Invention
|
Pigging ball valve. A pigging ball valve with a housing and ball core supported for rotation with... |
|
|
Invention
|
Threaded connection for drill pipes.
A pin and box of a threaded connection are provided with in... |
|
|
Invention
|
Pigging ball valve.
A pigging ball valve with a housing and ball core supported for ro... |
|
|
Invention
|
Threaded connection for drill pipes.
A pin and box of a threaded connection are p... |
|
|
Invention
|
Self-contained hydraulic esd system.
A hydraulic control circuit, comprising a control line conn... |
|
|
Invention
|
Thread making device. A thread making device that has a thread form with controlled height adjust... |
|
|
Invention
|
Thread cutter. A thread making device that has a thread form with controlled height adjustment. T... |
|
2002
|
Invention
|
Pigging ball valve. A pigging ball valve with a ball core mounted on an improved trunnion mountin... |
|
|
Invention
|
Self-contained hydraulic esd system. A hydraulic control circuit, comprising a control line conne... |
|
2000
|
P/S
|
Repair of drilling pipe. |
|
|
Invention
|
Method of injecting pigs into a pipe. A pig injector has a magazine having a plug at one end and ... |
|
1999
|
Invention
|
Self-contained hydraulic esd system. A hydraulic control circuit for a hydraulic actuator, includ... |
|
1998
|
Invention
|
Method of repairing cylindrical workpieces and lathe therefor. A method of repairing a drill pipe... |
|
1997
|
Invention
|
Pipe pig injector. A pig injector has a magazine having a plug at one end and connected to a pig ... |
|
1996
|
Invention
|
Pressure switch with increased deadband. A pressure switch has a housing with an interior bore ex... |
|
|
Invention
|
Pig injector valve. A side entry cap is disposed in a valve assembly. The side entry cap includes... |
|
|
Invention
|
Threaded coupling and pig injector valve. An improved threaded joint for connecting a first tubul... |
|
|
Invention
|
Cap assembly.
A cap assembly for a device operated by a
button switch, in which t... |
|
1995
|
Invention
|
Pig injector.
A pig injector has a valve assembly having
a pair of valve sea... |
|
|
Invention
|
Pressure switch. A pressure actuated switch has a diaphragm mounted across a piston having a pist... |
|
1994
|
Invention
|
Pressure switch. A pressure switch has a housing with an interior bore extending from one end to ... |
|
|
Invention
|
Pressure switch.
A pressure switch has a housing with an
interior bore extending ... |
