Electro-active polymer device and method for manufacturing such a device

    公开(公告)号:US11420411B2

    公开(公告)日:2022-08-23

    申请号:US16755452

    申请日:2018-10-10

    发明人: Emmanuel Taine

    摘要: Disclosed is a method for manufacturing an electro-active polymer layer structure including an elastomer layer and at least one electrode layer that is arranged on a first surface of the dielectric elastomer layer, the method including: applying a layer of conductive material on the first surface of the elastomer layer. The layer of conductive material consists of agglomerated graphene based nanoplatelets, having a flattened shape between two main surfaces parallel to the graphene molecular lattice plane. The method further includes: obtaining a texture of the nanoplatelets in the applied layer by orienting the nanoplatelets on the first surface of the elastomer layer with the main surfaces of the nanoplatelets being parallel with the first surface of the elastomer layer, such that the graphene molecular lattice plane of the nanoplatelets is parallel to the first surface of the elastomer layer.

    Switch assisted diode-clamped energy harvesting system for variable capacitance transducers

    公开(公告)号:US11218087B2

    公开(公告)日:2022-01-04

    申请号:US16956416

    申请日:2018-12-19

    发明人: Rick Van Kessel

    IPC分类号: H02N1/00 G01R19/00

    摘要: An electrical energy harvesting system includes at least one variable capacitor, preferably of electro-active polymer, two voltage sources, and a half-bridge network. The voltage sources are arranged in series with an interconnecting node between a first polarity terminal of the first voltage source and a second opposite polarity terminal of the second voltage source. For each variable capacitor the half-bridge network includes a pair of diodes in series with a common node therebetween, connected in parallel with the first voltage source, an inductor connected between the common node and a first terminal of the variable capacitor, a first switch in parallel with the first diode, and a second switch in parallel with the second diode. The second terminal of the variable capacitor is connected to the first polarity terminal of the second voltage source.

    Twin-hull offshore structure comprising an interconnecting central deck

    公开(公告)号:US10183730B2

    公开(公告)日:2019-01-22

    申请号:US15720146

    申请日:2017-09-29

    申请人: SBM SCHIEDAM B.V.

    摘要: A floating hydrocarbon processing/storage structure with a first and second assembly, each including a hull having side walls, one or more storage tanks and a deck structure, a connection structure interconnecting the hulls, processing equipment situated on the deck structures, at least one riser connected to a subsea hydrocarbon well and to the processing equipment and/or storage tanks, with a mooring system connecting the processing/storage structure to the sea bed, each hull including a hull deck structure bridging the side walls, the connection structure including a central deck extending at or near the height of the hull deck structures along at least 70% of the length of the hulls, the central deck supporting at least one of: risers vertically extending from the central deck between the hulls to the sea bed, fluid ducts horizontally supported on the central deck, and at least one drilling/work-over rig or crane.

    Bearing arrangement for an electric swivel
    6.
    发明申请

    公开(公告)号:US20180327054A1

    公开(公告)日:2018-11-15

    申请号:US15774595

    申请日:2016-11-18

    IPC分类号: B63B21/50 B23Q1/01

    摘要: A electric swivel, LVES, in a swivel stack, includes an annular outer element defining a cylindrical chamber around an axis S and an cylindrical inner element coaxial with the outer element. The cylindrical chamber is sealed at an upper side with an annular cover and is configured for rotation relative to the inner and outer element around the axis S. The inner element includes at an inner radial side first and second bearing parts defining an inner bearing. The outer element includes at an outer radial side first and second bearing parts defining an outer bearing. The inner bearing includes an inner annular interface between the first and second bearing parts, the outer bearing includes an outer annular interface between the first and second bearing parts. Each of the annular interfaces is coaxial with the inner and outer element, and each annular interface is configured as a flame conducting path.

    Method and apparatus for elevating the tapered stress joint or flex joint of an SCR above the water

    公开(公告)号:US09988860B2

    公开(公告)日:2018-06-05

    申请号:US14958140

    申请日:2015-12-03

    IPC分类号: E21B17/01 E21B19/00

    摘要: A removable riser hang-off connector is equipped with a flexible element that, in one embodiment, comprises rubber-encapsulated steel plates. The connector is designed for attachment to a hang-off collar provided on a steel catenary riser below the tapered stress joint or flex joint. Connection of the removable riser hang-off connector may be made by an ROV. With the removable riser hang-off connector attached, the tapered stress joint and/or flex joint may be raised out of the water (for inspection, maintenance, repair or replacement) by lifting the upper end of the SCR out of its porch receptacle with a chain jack (or other lifting device) and inserting the removable riser hang-off connector into the porch receptacle. This temporarily supports the SCR in an elevated state with the tapered stress joint and/or flex joint above the surface of the water.

    Sealed pipe joint
    10.
    发明授权

    公开(公告)号:US09828812B2

    公开(公告)日:2017-11-28

    申请号:US13846253

    申请日:2013-03-18

    摘要: In a pipe joint where two pipe sections (14, 16) have threadably engaged end potions (17, 18), joint ends (32, 34) are substantially sealed to each other by a sealing surface (40, 50) on one pipe section that substantially abuts a sealing surface (42, 52) on the other pipe section. In one joint, a ring-shaped cutout(121, FIG. 7) is formed in a first pipe section and a ring-shaped spacer (120) is located in the cutout. The spacer is chosen from several that have slightly different lengths so the spacer ends contacts the corresponding sealing surface(130).