Bilge pump arrangement having back flow preventer

    公开(公告)号:US10302090B2

    公开(公告)日:2019-05-28

    申请号:US14193324

    申请日:2014-02-28

    Abstract: Apparatus for providing liquid from a reservoir of liquid contained in a vehicle/vessel or other equipment, featuring a pump for pumping liquid having a pump housing outlet nozzle; and a back flow preventer assembly having an inlet end to couple to the outlet nozzle, having an outlet end to couple to an outlet hose for connecting to an outlet exiting a wall of a vehicle, vessel or other equipment, and having a duckbill-type check valve to provide liquid being pumped in one direction from the reservoir of the vehicle, vessel or other equipment to the outlet exiting the wall of the vehicle, vessel or other equipment via the outlet hose, and also configured to prevent residue liquid left in the outlet hose from flowing back into the pump and returning to the reservoir once the pump has completed pumping if the outlet exiting the wall of the vehicle, vessel or other equipment is above the outlet nozzle, so as to prevent on an on/off oscillation of the pump depending on the volume of residue liquid left in the outlet hose.

    Bilge pump having concealed air-lock vent

    公开(公告)号:US09829000B2

    公开(公告)日:2017-11-28

    申请号:US14193269

    申请日:2014-02-28

    CPC classification number: F04D9/003 F04D29/406

    Abstract: The pump has a pump body having a pump body portion with a vent hole to allow air entrapped in the pump body to bleed out to atmosphere and allow liquid to fill the pump body in order to get the pump running, and also includes a tab receiving portion having a rim defining an opening; and a pump/strainer assembly that includes a base with slots/openings formed therein to receive and strain liquid to be pumped, and includes a strainer retaining tab with a raised rim to be received in the opening of the tab receiving portion and circumferentially engaged by the rim of the opening to hold together the pump/strainer assembly and the pump body. The at least one tab receiving portion and the strainer retaining tab are dimensioned to conceal the vent hole and substantially prevent the liquid from bleeding through the vent hole and squirting outside of the pump body when the pump is running.

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