EP 3482035 A1 20190515 - WORM-DRIVE POWER TONG
Title (en)
WORM-DRIVE POWER TONG
Title (de)
KRAFTZANGE MIT SCHNECKENANTRIEB
Title (fr)
CLÉS À COMMANDE HYDROPNEUMATIQUE À VIS SANS FIN
Publication
Application
Priority
- US 201615273983 A 20160923
- US 2017037500 W 20170614
Abstract (en)
[origin: US2018087334A1] A tong for applying torque to a tubular and a method of using a tong, of which the tong includes a rotary ring defining an inner profile through which the tubular is received, the inner profile defining a plurality of pockets extending radially outward and a plurality of cam surfaces circumferentially between the plurality of pockets, and a plurality of engaging members disposed within the rotary ring. The plurality of engaging members are movable from a retracted position at least partially in the plurality of pockets to an engaging position in which the plurality of engaging members are positioned along the plurality of cam surfaces. The tong also includes a plurality of cam followers extending through the rotary ring, and a worm drive including a helical ridge. The plurality of cam followers engage the helical ridge so as to transmit a substantially tangential force to the rotary ring.
IPC 8 full level
E21B 19/16 (2006.01); F16H 1/16 (2006.01)
CPC (source: EP US)
E21B 19/164 (2013.01 - EP US); F16H 1/166 (2013.01 - EP); F16H 1/225 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2018087334 A1 20180329; AU 2017331075 A1 20190207; BR 112019005404 A2 20190611; CA 3032802 A1 20180329; EP 3482035 A1 20190515; EP 3482035 A4 20200219; MX 2019002756 A 20190527; WO 2018057075 A1 20180329
DOCDB simple family (application)
US 201615273983 A 20160923; AU 2017331075 A 20170614; BR 112019005404 A 20170614; CA 3032802 A 20170614; EP 17853577 A 20170614; MX 2019002756 A 20170614; US 2017037500 W 20170614