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218 条记录 (耗时 0.021 秒)

    Unmanned undersand vehicle
    85.
    发明授权
    Unmanned undersand vehicle 有权

    公开(公告)号：US11498652B2

    公开(公告)日：2022-11-15

    申请号：US16394489

    申请日：2019-04-25

    申请人： United States of America as represented by the Secretary of the Navy

    发明人： Nghia X. Tran

    IPC分类号： B60F3/00 ,  B63H21/17 ,  B62D57/036 ,  E21D9/10 ,  E21B7/26 ,  B63H25/02 ,  B63H1/12

    摘要： An unmanned vehicle capable of tunneling into soft materials, such as sand, comprises a hollow, bullet-shaped forward outer body with a first drive screw thread integrated into its exterior, a hollow cylindrical rear outer body with a second drive screw thread integrated into its exterior but threaded in the opposed direction of the first drive screw thread, and an inner body that is rotatably coupled to the inside of the forward and rear outer bodies via mechanical gears, and including directional control fins mounted on a housing at the rear end of the inner body.

    Hand-held underwater aircraft
    86.
    发明授权
    Hand-held underwater aircraft 有权

    公开(公告)号：US11498649B2

    公开(公告)日：2022-11-15

    申请号：US17287666

    申请日：2018-11-12

    申请人： BOYA GONGDAO (BEIJING) ROBOT TECHNOLOGY CO., LTD.

    发明人： Minglei Xiong ,  Longdong Chen ,  Yijun Chen ,  Haijie Li ,  Kai Wang

    IPC分类号： B63C11/46 ,  B63C11/02 ,  B63H1/12 ,  B63H5/08

    摘要： A handheld underwater aircraft includes a battery compartment (12) and propellers. There are at least two propellers, which are symmetrically distributed on both sides of the battery compartment (12), and are connected to the battery compartment (12). A special design with axes of the propellers being unparallel with an axis of the battery compartment (12) is adopted, and unparallel included angles make component forces generated by the various propellers in a direction of motion of a non-underwater aircraft offset each other, and enable the underwater aircraft to maintain balanced and forward-forward motion. The design with the axes of the propellers being unparallel with the axis of the battery compartment (12) leads to a little power loss, but avoids a larger power loss caused by the impact of water on the human body, thereby comprehensively improving the thrust of the underwater aircraft in use.

    Fluid pump with a rotor
    87.
    发明授权
    Fluid pump with a rotor 有权

    公开(公告)号：US10662967B2

    公开(公告)日：2020-05-26

    申请号：US15948512

    申请日：2018-04-09

    申请人： ECP Entwicklungsgesellschaft MBH

    发明人： Mario Scheckel

    IPC分类号： A61M1/10 ,  F04D29/18 ,  F04D29/02 ,  F04D29/24 ,  F04D29/60 ,  B63H1/14 ,  A61M1/12 ,  B63H1/12

    摘要： The invention relates to a fluid pump, in particular to a liquid pump having a rotor with at last one rotor blade for conveying the fluid, the rotor being variable with respect to its diameter between a first, compressed state and a second expanded state. In order to produce a simple compressibility and expandability of the rotor of the pump, it is provided according to the invention that at least one rotor blade is deformable between a first state which it assumes in the compressed state of the rotor and a second state which it assumes in the expanded state of the rotor by means of a fluid counterpressure during a rotation of the rotor during pump operation.

    Amphibious marsh craft
    88.
    发明授权
    Amphibious marsh craft 有权

    公开(公告)号：US10293648B2

    公开(公告)日：2019-05-21

    申请号：US15943056

    申请日：2018-04-02

    申请人： John B. Coast

    发明人： John B. Coast

    IPC分类号： B60F3/00 ,  B62D55/06 ,  B62D55/18 ,  B63H1/34 ,  B63H25/42 ,  B63H1/12 ,  B63C13/00

    摘要： A tracked, amphibious vehicle, comprising at least two, spaced, elongated pontoons disposed generally parallel to one another. A platform structure can be supported by and structurally connects the pontoons, the platform structure including a transom, a lowermost generally horizontally extending panel above a free clearance area under a bottom panel and between the pontoons through which terrain and debris can pass. A hydraulic drive system can propel the vehicle, said drive system including left and right hydraulic motors mounted on the pontoons. At least one series of longitudinally spaced bogie wheels for supporting said vehicle can be mounted along the bottom of the pontoons. A continuous, endless belt can encircle each pontoon and engages the bogie wheels. Ground-engaging cleats assembled on the outer surface of each belt and covering the pontoon bottom provide traction to the vehicle. Gearing interfaces the motor with the endless belts. A supplemental, marine drive assembly includes: a hydraulic motor having a rotary device, shaft, with an axis, a propeller shaft having an axis wherein the motor axis and propeller axis are aligned, a universal joint connecting the hydraulic motor to the transom, and a housing including a sleeve that contains the propeller shaft, a first vertical plate connected to the sleeve and a second vertical plate connected to the sleeve below the first plate.

    Apparatus for propelling fluid, especially for propulsion of a floating vehicle
    89.
    发明授权
    Apparatus for propelling fluid, especially for propulsion of a floating vehicle 有权

    公开(公告)号：US10252784B2

    公开(公告)日：2019-04-09

    申请号：US13844071

    申请日：2013-03-15

    申请人： John Ioan Restea

    发明人： John Ioan Restea

    IPC分类号： B63H1/12

    摘要： A propeller has a number of blade surfaces or winglets extending helically around its rotational axis in the most streamlined manner. The winglets gradually project at an increasing distance outward with an arcuate shape, each defining a rearwardly concave channel that increases in volume and degree of encirclement rearward on the propeller. In the front of the propeller, the winglets are shaped so that they have edges angled obliquely and diagonally that conformingly and without cavitation cut into the water and cause it to flow smoothly in the channels. In the middle of the propeller, the winglet edges extend rearward so that water entrained in the channel is directed rearward without centrifugal loss. In the rear portion of the propeller, the channels narrow and reduce in volume so as to expel the water from the concavity.

    Water turbine propeller
    90.
    发明授权
    Water turbine propeller 有权

    公开(公告)号：US10099761B2

    公开(公告)日：2018-10-16

    申请号：US14100675

    申请日：2013-12-09

    申请人： Richard Hayman

    发明人： Richard Hayman

    IPC分类号： B63H1/12 ,  B63H1/14 ,  B63H1/26 ,  F04D3/02

    摘要： A water turbine propeller includes an optional turbine casing having forward and rearward openings, a rotational cylindrical unit, a plurality of rotating foil blades rigidly secured to the inner periphery of the rotational shaft on a common shaft, and an engine or motor which rotates the rotational shaft within the turbine casing. The operation of the engine causes the rotation of the rotational shaft and the helical blades direct water into the forward opening of the turbine casing and out the rearward openings of the turbine casing, thereby creating a focused torque (or vortex) effect on the water flow for a propulsive force.