Tool coupler with threaded connection for top drive

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United States of America Patent

PATENT NO 10837495
APP PUB NO 20180258999A1
SERIAL NO

15806560

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drive unit includes a drive stem having first friction surfaces and a load coupling, wherein the load coupling is a threaded coupling. The drive unit also includes a transmission unit having second friction surfaces parallel to the first friction surfaces; and shoulders proximate a bottom of the transmission unit. The drive unit further includes a transmission selector movable to an “on” position or an “off” position, wherein the drive stem moves synchronously with the transmission unit when the transmission selector is in the “on” position.

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Patent Owner(s)

Patent OwnerAddress
WELLS FARGO BANK NATIONAL ASSOCIATION1525 WEST W T HARRIS BLVD CHARLOTTE NC 28262

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liess, Martin Seelze, DE 45 1118

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