MULTI-STAGE MEMBRANE DISTILLATION DEVICE AND METHOD

    公开(公告)号:US20230347292A1

    公开(公告)日:2023-11-02

    申请号:US18016895

    申请日:2021-07-16

    CPC classification number: B01D61/3641 B01D61/366 B01D2313/54 B01D2313/56

    Abstract: A method for assembling a scalable, multi-stage membrane distillation module includes providing plural thermal conduction layers, plural first gaskets, plural membranes for distilling water, and plural second gaskets, where a periphery of each layer and gasket has plural holes formed all around the periphery, stacking on top of each other a first thermal conduction layer, a first gasket, a first membrane, and a second gasket, to form a first stage, stacking on top of each other, and also on top of the first stage, a second thermal conduction layer, a third gasket, a second membrane, and a fourth gasket, to form a second stage, placing plural bolts through the plural holes formed all around the periphery of each layer and each gasket of the first and second stages, and tightening with nuts the plural bolts to form one evaporation layer and one condensation layer for each of the first and second stages.

    3D printed waveguides and method based on photonic crystal fibers

    公开(公告)号:US11796734B2

    公开(公告)日:2023-10-24

    申请号:US17574107

    申请日:2022-01-12

    CPC classification number: G02B6/03616 G02B6/02338 G02B6/3684 G02B6/274

    Abstract: An optical waveguide is configured to guide an optical beam, and the optical waveguide includes a down-taper element configured to reduce a diameter of an incoming light beam having a random polarization; a dual-core directional coupler element configured to separate the incoming light beam into a horizontally-polarized beam and a vertically-polarized beam, each beam being confined in first and second cores, respectively; and a core fan-out element configured to increase a distance between the horizontally-polarized beam and the vertically-polarized beam upon exit from the core fan-out element. Each of the down-taper element, the dual-core directional coupler element, and the core fan-out element are 3-dimensional, 3D, printed using a single material.

    MULTIFUNCTIONAL DRILLING ENHANCEMENT TOOL AND METHOD

    公开(公告)号:US20230313621A1

    公开(公告)日:2023-10-05

    申请号:US17766818

    申请日:2020-10-06

    CPC classification number: E21B17/046 E21B10/26 E21B17/06

    Abstract: A multifunctional drilling enhancement tool includes a shaft having a bore extending along a longitudinal direction (X); a main cutting device rotatably and slidably attached to the shaft; a first housing fixedly attached to a first end of the shaft; a second housing fixedly attached to a second end of the shaft; first and second proximal engagement elements attached to opposite ends of the main cutting device; and first and second distal engagement elements attached to corresponding ends of the first and second housings, so that the first distal engagement element is directly facing the first proximal engagement element, and the second distal engagement element is directly facing the second proximal engagement element. The first distal engagement element has removable first distal inserts, the first proximal engagement element has removable first proximal inserts, and the first distal inserts are configured to directly contact the first proximal inserts to transmit a rotation from the first housing to the main cutting device.

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