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US 11,453,464 B2Granted
Electrohydraulic device, method, and marine vessel or platform
AssigneeNational Oilwell Vareo Norway AS
InventorsYngvar Borøy, Thor Strand, Geir Odd Bergstøl
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Abstract
An electrohydraulic device includes an extender which is arranged to be actuated by hydraulic fluid, and a rotor of an electric motor, the rotor being arranged to rotate about a part of the extender. The rotor may have an annular body which encircles or surrounds part of the extender. There is also described a related method of use and a marine vessel or platform where the device may be applied.
Claims12
An electrohydraulic device comprising:
- an extender comprising a first section and a second section, wherein the first section is arranged to be axially translated relative to the second section by hydraulic fluid;
- an electric motor arranged on an outside of the extender, the electric motor including a rotor comprising an annular body which encircles the extender and is arranged to rotate about said extender;
- and
- a pump comprising a drive shaft, wherein the rotor is arranged to drive the pump for pumping and supplying the hydraulic fluid for operating the extender;
- wherein the rotor is coupled to the drive shaft through a gear arrangement comprising gears which have a gear ratio therebetween.
2 more elements
Dependencies are inferred from the claim text.