APPARATUS FOR LIFTING AND LOWERING MANHOLE COVERS

    公开(公告)号:US20240174502A1

    公开(公告)日:2024-05-30

    申请号:US18430736

    申请日:2024-02-02

    申请人: Paul DENIKEN

    发明人: Paul DENIKEN

    IPC分类号: B66F19/00 B66C1/04 B66C1/34

    CPC分类号: B66F19/005 B66C1/04 B66C1/34

    摘要: An apparatus for lifting and lowering manhole covers is shown and described. The apparatus for lifting and lowering manhole covers includes a main beam secured to a vehicle connection support. A winch is secured along the main beam. The winch is configured to secure to a manhole cover. A support leg secured to the main beam such that the winch is positioned between the vehicle connection support and the support leg.

    Vacuum lift apparatus
    4.
    发明授权

    公开(公告)号:US11858610B1

    公开(公告)日:2024-01-02

    申请号:US16925376

    申请日:2020-07-10

    IPC分类号: B64B1/58 B66F19/00

    摘要: An apparatus for lifting a load to a desired altitude using an evacuated hollow lift body is disclosed. Once evacuated, the apparatus is lighter than the surrounding atmosphere. The lift body can be formed as a hollow fluid tight structure with a tube wound and sealed in a helical pattern or a dual membrane structure with a pressurized intermediate volume sandwiched between inner and outer membranes. A load can be attached to the apparatus and lifted to an altitude where the effective density of the apparatus and load is equivalent to the density of the surrounding atmosphere.

    Vertical moving method, vertical moving apparatus, and vertical moving system

    公开(公告)号:US11608253B2

    公开(公告)日:2023-03-21

    申请号:US17071402

    申请日:2020-10-15

    发明人: Bungo Matsumoto

    摘要: A vertical moving method of a vertical moving unit on which a conveyance target object is mounted includes steps of causing a non-electric biasing unit to generate a biasing force to raise the vertical moving unit, causing an electric motor unit to generate a thrust in a direction to raise the vertical moving unit or a thrust in a direction to lower the vertical moving unit, and causing an electromagnetic brake unit to generate a braking force to resist a movement of the vertical moving unit. Independently of presence/absence of the object and a weight of the object, the thrust and/or the braking force is controlled such that the vertical moving unit stops when an external force of overload more than a predetermined value acts on the vertical moving unit during a vertical movement.

    Manhole cover tool
    8.
    发明授权

    公开(公告)号:US11565925B1

    公开(公告)日:2023-01-31

    申请号:US17824443

    申请日:2022-05-25

    IPC分类号: B66F19/00 B66F15/00 B25D1/04

    摘要: A tool joinable with a handle. The tool includes a body, the body includes a middle area configured to be joinable to the handle. The front end of the body includes a toe extending away from the middle area. The toe includes a first vertical thickness and a second vertical thickness less than the first vertical thickness for a length of the toe extending away from the middle area. The back end of the body can include a heal pad extending away from the middle area and to create a heal gap between a bottom surface of the heal pad and the second portion of the bottom edge defined by the middle area. The tool can include a fulcrum joined to the body and defining a fulcrum portion of the bottom edge with the fulcrum projecting away from the top edge.

    Manhole Cover Lifting Device
    9.
    发明申请

    公开(公告)号:US20220098018A1

    公开(公告)日:2022-03-31

    申请号:US17490904

    申请日:2021-09-30

    申请人: Mag Lift, LLC

    IPC分类号: B66F19/00

    摘要: A device for lifting a metal cover may include a rope having a first end and a second end and a magnet connected to the first end of the rope. The magnet may be configured to be applied to a manhole cover, and upon applying an upward force to the second end of the rope, the magnet pulls the manhole cover upward.

    Payload lift and positioning system for airships

    公开(公告)号:US11286046B2

    公开(公告)日:2022-03-29

    申请号:US16364679

    申请日:2019-03-26

    申请人: Michael J. Capek

    发明人: Michael J. Capek

    IPC分类号: B64D1/22 B66F19/00 B64B1/06

    摘要: A payload lift and positioning system mounted to an airship for precisely positioning a payload being lowered from the airship to the ground. The payload lift and positioning system includes a support beam structure mounted to an underside of the airship, the support beam structure including load hoists and guide cable hoists mounted thereto. A payload supporting structure to carry the payload, the payload supporting structure being connected to support beam structure by the load hoists and guide cable hoists. A guide cable system includes a plurality of guide cables, each extending from the guide cable hoists disposed on the support beam structure. A positioning system includes a guide member that is mounted on the payload supporting structure to control the position of the payload being lowered from the airship to ground.