EP 2232006 A1 20100929 - IMPROVED SEAL
Title (en)
IMPROVED SEAL
Title (de)
VERBESSERTE DICHTUNG
Title (fr)
DISPOSITIF D'ÉTANCHÉITÉ PERFECTIONNÉ
Publication
Application
Priority
- GB 2009000010 W 20090102
- GB 0800884 A 20080118
Abstract (en)
[origin: WO2009090367A1] A seal arrangement (10) comprises a plurality of seal elements (14) arranged in series. At least one seal element (14a) has a predetermined rated pressure and includes a relief arrangement (20a) permitting relief of pressure across the seal element (14a) at a predetermined level lower than said rated pressure.
IPC 8 full level
E21B 33/12 (2006.01); E21B 34/08 (2006.01); F16J 15/00 (2006.01); F16J 15/16 (2006.01)
CPC (source: EP US)
E21B 33/1216 (2013.01 - EP US); E21B 34/08 (2013.01 - EP US); F16J 15/006 (2013.01 - EP US)
Citation (search report)
See references of WO 2009090367A1
Citation (examination)
- US 2678605 A 19540518 - TAPPMEYER RONALD A
- US 3385367 A 19680528 - PAUL KOLLSMAN
Designated contracting state (EPC)
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 SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
WO 2009090367 A1 20090723; AU 2009204716 A1 20090723; EP 2232006 A1 20100929; GB 0800884 D0 20080227; US 2011101613 A1 20110505
DOCDB simple family (application)
GB 2009000010 W 20090102; AU 2009204716 A 20090102; EP 09702380 A 20090102; GB 0800884 A 20080118; US 81289709 A 20090102