EP 2702244 A2 20140305 - REVERSE ROTATION PROTECTION FOR BOREHOLE PUMPS
Title (en)
REVERSE ROTATION PROTECTION FOR BOREHOLE PUMPS
Title (de)
RÜCKDREHSICHERUNG FÜR BOHRLOCHPUMPEN
Title (fr)
SÉCURITÉ ANTIRETOUR POUR POMPES DE FORAGE
Publication
Application
Priority
- DE 102011018755 A 20110427
- DE 2012000416 W 20120419
Abstract (en)
[origin: CA2831521A1] The invention relates to a reverse rotation protection for borehole pumps, said reverse rotation protection being mounted in a drive head. The reverse rotation protection comprises a housing and a clamping tool for securing a polished rod. The clamping tool comprises at least two exchangeable contact elements which detachably fix the polished rod.
IPC 8 full level
E21B 43/12 (2006.01); F04B 47/00 (2006.01); F16D 51/48 (2006.01); F16D 65/16 (2006.01); F16D 65/22 (2006.01)
CPC (source: EP US)
E21B 19/12 (2013.01 - US); E21B 43/126 (2013.01 - EP US); F01C 21/10 (2013.01 - EP US); F04C 14/28 (2013.01 - EP US); F04C 13/008 (2013.01 - EP US)
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
DOCDB simple family (publication)
DE 102011018755 A1 20121031; DE 102011018755 B4 20131024; AU 2012247897 A1 20131024; CA 2831521 A1 20121101; CN 103477027 A 20131225; CN 103477027 B 20161012; EP 2702244 A2 20140305; RU 2013152373 A 20150610; RU 2565126 C2 20151020; US 2014048246 A1 20140220; WO 2012146234 A2 20121101; WO 2012146234 A3 20130411; ZA 201308016 B 20140730
DOCDB simple family (application)
DE 102011018755 A 20110427; AU 2012247897 A 20120419; CA 2831521 A 20120419; CN 201280017600 A 20120419; DE 2012000416 W 20120419; EP 12727256 A 20120419; RU 2013152373 A 20120419; US 201314063871 A 20131025; ZA 201308016 A 20131029