CONNECTOR COVER AND METHODS
    1.
    发明申请

    公开(公告)号:US20230060911A1

    公开(公告)日:2023-03-02

    申请号:US17465401

    申请日:2021-09-02

    IPC分类号: F16L57/00 F16L35/00 F16L57/06

    摘要: A removable cover to protect a connector between two conduits includes a single body having a wall surrounding an interior volume. The body has a neck sized to grip a portion of a first of the conduits. The body has a size-adjustable section to permit the body to be shortened or lengthened. The body has a casing section. The casing section protects a coupling connecting together the two conduits.

    LIGHT SYSTEM FOR A SEWER CLEANING VEHICLE

    公开(公告)号:US20210129196A1

    公开(公告)日:2021-05-06

    申请号:US17003237

    申请日:2020-08-26

    摘要: A vehicle includes at least one hose extending from the vehicle and configured to extend below ground through a manhole, and a light system. The light system includes a storage member, such as a retractable reel, coupled to the vehicle, a flexible line wrapped at least partially around the storage member, and a light source coupled to the flexible line. The storage member is adapted to selectively extend and retract the light source together with the hose below ground, and the light source is storable on the vehicle adjacent the storage member. The light source has a self-contained power source. In some systems, the flexible line and/or the light source are removable from the vehicle so they can be moved to a remote location from the vehicle.

    Self-rotating tube cleaning nozzle assembly

    公开(公告)号:US10598449B2

    公开(公告)日:2020-03-24

    申请号:US15783479

    申请日:2017-10-13

    摘要: A self-rotating tube cleaning nozzle assembly is disclosed that includes at least one debris exclusion feature. The nozzle assembly includes a main body defining an internal fluid passageway, a nozzle mounted to the main body, and a sleeve rotatably disposed about the main body. In one aspect, the sleeve having at least one discharge port in fluid communication with the main body internal fluid passageway for discharging a spray and rotating the sleeve about the main body. The debris exclusion feature is defined between the main body and the sleeve and includes a stepped portion on an exterior surface of the main body that faces and overlaps with a complementarily shaped stepped portion on an interior surface of the sleeve. The debris exclusion feature forms a tortuous pathway that eliminates or reduces contaminant ingress.

    Piston head retaining system
    8.
    发明授权

    公开(公告)号:US10584699B2

    公开(公告)日:2020-03-10

    申请号:US15889707

    申请日:2018-02-06

    发明人: Xiaolun Huang

    摘要: A piston assembly is provided with a piston head retaining structure. The piston assembly includes a piston shaft and a piston head disposed around the piston shaft and providing a piston head face that faces a cylinder wall. The piston assembly further includes a piston head mount element arranged adjacent to the piston head and mounted around the piston shaft and a tensioning device that generates an axial tension between the piston shaft and the piston head.

    CHECK VALVE FOR SLURRY WATER PUMP
    9.
    发明申请

    公开(公告)号:US20190301622A1

    公开(公告)日:2019-10-03

    申请号:US16372980

    申请日:2019-04-02

    发明人: Xiaolun Huang

    IPC分类号: F16K15/02 F16K1/46

    摘要: An improved check valve includes a valve seat having a seating surface and a guiding barrel body; the seating surface having a groove; an elastomeric seal member oriented in the groove; a valve cage having a cylindrical valve cage body and opposite open and closed ends, the closed end being closed by a valve disk; the valve cage body having a plurality of windows allowing fluid flow therethrough; the valve cage body being sized to slide inside of the guiding barrel body; the valve cage further including a groove at an outer perimeter adjacent the open end of said valve cage body; a retainer arrangement including a washer and a lock ring; the washer having a recess pocket and being sized to slide over the valve cage and against the guiding barrel body; the lock ring being seated within the groove of the valve cage and having an outer diameter sized to be oriented within the recess pocket of the washer; and a compression spring oriented outside of the guiding barrel body and held by the retainer arrangement between the open end of the valve cage and against the valve seat to urge the seating surface of the valve seat against the valve disk.

    PISTON HEAD RETAINING SYSTEM
    10.
    发明申请

    公开(公告)号:US20190242377A1

    公开(公告)日:2019-08-08

    申请号:US15889707

    申请日:2018-02-06

    发明人: Xiaolun Huang

    IPC分类号: F04B53/14 F16J1/12 F16J7/00

    摘要: A piston assembly is provided with a piston head retaining structure. The piston assembly includes a piston shaft and a piston head disposed around the piston shaft and providing a piston head face that faces a cylinder wall. The piston assembly further includes a piston head mount element arranged adjacent to the piston head and mounted around the piston shaft and a tensioning device that generates an axial tension between the piston shaft and the piston head.