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Patent Searching and Data


Title:
REVERSE ROTATION PROTECTION FOR BOREHOLE PUMPS
Document Type and Number:
WIPO Patent Application WO/2012/146234
Kind Code:
A3
Abstract:
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.

Inventors:
CEMIN ANGELO (DE)
DITTRICH JOCHEN (DE)
ZUBER ALEXANDER (DE)
Application Number:
DE2012/000416
Publication Date:
April 11, 2013
Filing Date:
April 19, 2012
Export Citation:
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Assignee:
NETZSCH OILFIELD PRODUCTS GMBH (DE)
CEMIN ANGELO (DE)
DITTRICH JOCHEN (DE)
ZUBER ALEXANDER (DE)
International Classes:
E21B43/12; F04B47/00; F16D51/48; F16D65/16; F16D65/22
Foreign References:
CA2462183A12005-09-29
US6039115A2000-03-21
US5551510A1996-09-03
US20050269889A12005-12-08
CA2270017A12000-10-26
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