Snubbing jack capable of reacting torque loads

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11142439
APP PUB NO 20190345014A1
SERIAL NO

16466582

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A snubbing jack including a jack assembly including a base plate, a traveling plate, an axis extending through the base plate and the traveling plate, and a plurality of piston-cylinder assemblies, a rotary drive including a rotary base and a hub, wherein the rotary drive is configured to rotate the hub relative to the rotary base, a clamp coupled to the rotary base and configured to grip a first tubular member, a power tongs coupled to the rotary base and configured to grip a second tubular member and to rotate the second tubular relative to the rotary base, and a torque transfer device coupled between the rotary drive and the jack assembly and configured to allow the rotary drive to move axially relative to the base plate and configured to restrict rotation of the rotary drive relative to the jack assembly.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
NATIONAL OILWELL VARCO L P7909 PARKWOOD CIRCLE DRIVE HOUSTON TX 77036

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huse, Kraig W Burleson, US 1 0
Steffenhagen, Timothy S Fort Worth, US 9 148
White, William Benjamin Kalispell, US 4 13

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