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2024
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P/S
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Oil well drilling and completions equipment in the nature of hydraulic power tongs to thread and ... |
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P/S
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Power tongs; back-ups for power tongs; frames for power tongs; test presses for pressure vessels;... |
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Invention
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Door switch and centering tab.
A door switch is suitable for use with a power tong having a door... |
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2023
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Invention
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Door switch and centering tab. There is disclosed a door switch for a power tong. A door may be m... |
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2018
|
Invention
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Shutoff valve. A safety interlock valve with two flow passages, which in one position allows flow... |
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Invention
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Power tong. A power tong is provided for rotating a pipe, the power tong comprising: a frame havi... |
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2017
|
Invention
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Power tong. A power tong is provided for rotating a pipe, the power tong comprising: a fram... |
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2013
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Invention
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Laser heat treatment.
A method of heat treating a surface with a laser, successive passes of the... |
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|
Invention
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Laser heat treatment.
A method of heat treating a surface with a laser, successive pas... |
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Invention
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Shutoff valve.
A safety interlock valve with two flow passages, which in one position allows flo... |
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2011
|
Invention
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Tong assemblies. A tong assembly is disclosed, comprising: a frame having at least a pair of post... |
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2010
|
Invention
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Compact power tong. A power tong for rotating a pipe, the power tong comprising: a frame having a... |
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Invention
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Power tong with door jammer valve. An apparatus for shutting off the hydraulic supply of a power ... |
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2000
|
Invention
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Tubing spider. A tubing spider includes a rigid support frame having a plurality of support posts... |
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Invention
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Rotor for a crushing machine. A rotor for a crushing machine has a central block mounted on a sha... |
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1999
|
Invention
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Improved tubing spider.
A tubing spider includes a rigid support frame having a plural... |
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|
Invention
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Power tong and backup tong system. A power tong system, comprising a frame having a rear support ... |
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1990
|
Invention
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Power tongs.
A power tong includes a frame having arcuate
front portions def... |
