E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 19/02 (2006.01) E21B 15/00 (2006.01) E21B 19/086 (2006.01) E21B 23/04 (2006.01)
Patent
CA 2240582
An apparatus for a derrick, comprising two or more hydraulic piston/cylinder arrangements (10, 11) for raising and lowering a yoke (8) which travels on guide rails (7) in the derrick itself and a hydraulic system (30) for the operation of piston/cylinder arrangements (10, 11), where the hydraulic system has various modes of operation, normal raising or lowering of the yoke (i), use of the differential area of the piston (21) for rapid lowering or raising of the yoke (8) and, optionally, a combination of these with extra pressure provided from the accumulators (39).
La présente invention concerne un équipement destiné à un derrick et comprenant deux, ou davantage, ensembles hydrauliques piston-cylindre (10, 11) servant à hisser et à abaisser un joug (8) qui se déplace sur des rails de guidage (7) dans le derrick lui-même, et un système hydraulique (30) servant au fonctionnement des ensembles piston-cylindre, ce système ayant différents modes de fonctionnement: hissage ou descente normal(e) du joug (i), utilisation de la zone différentielle du piston (21) pour abaisser ou hisser rapidement le joug et, éventuellement, une combinaison de ce qui précède, avec un supplément de pression fourni par les accumulateurs (39).
Aker Kvaerner Mh As
Maritime Hydraulics As
Mccarthy Tetrault Llp
LandOfFree
Apparatus and method for raising and lowering a piston in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for raising and lowering a piston in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for raising and lowering a piston in a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1814576