EP 2029423 B1 20091223 - HEAVE MOTION COMPENSATION
Title (en)
HEAVE MOTION COMPENSATION
Title (de)
AUSGLEICH FÜR HEBEBEWEGUNG
Title (fr)
COMPENSATION DU MOUVEMENT DE TANGAGE
Publication
Application
Priority
NL 2006000296 W 20060616
Abstract (en)
[origin: WO2007145503A1] A heave motion compensator (30, 40, 70, 100, 140, 300) for compensating heave motions comprises a cylinder (41) and a piston (44) delimiting a variable volume fluid chamber (49) in said cylinder (41), wherein said piston (44) can oscillate within said cylinder (41), said piston (44) being provided with a seal (48) frictionally engaging said cylinder. The compensator further includes a motor (65) that causes said seal (48) to revolve relative to said cylinder (41) so as to obtain a dynamic friction regime between the seal (48) and the cylinder (41). In a possible embodiment the motor (65) is arranged to rotate said piston (44), and the seal (48) is mounted on said piston (44) so as to rotate along with said piston (44).
IPC 8 full level
B63B 39/00 (2006.01); B66D 1/52 (2006.01); E21B 19/00 (2006.01); E21B 19/09 (2006.01)
CPC (source: EP US)
B63B 17/00 (2013.01 - EP US); B63B 27/30 (2013.01 - EP US); B66D 1/52 (2013.01 - EP US); E21B 19/006 (2013.01 - EP US); E21B 19/09 (2013.01 - EP US); B63B 2017/0072 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007145503 A1 20071221; AT E452819 T1 20100115; BR PI0621747 A2 20120724; CN 101466591 A 20090624; CN 101466591 B 20130320; DE 602006011373 D1 20100204; EP 2029423 A1 20090304; EP 2029423 B1 20091223; US 2009133881 A1 20090528
DOCDB simple family (application)
NL 2006000296 W 20060616; AT 06757801 T 20060616; BR PI0621747 A 20060616; CN 200680054984 A 20060616; DE 602006011373 T 20060616; EP 06757801 A 20060616; US 30496906 A 20060616