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    AIR RELEASE VALVE
    6.
    发明公开
    AIR RELEASE VALVE 审中-公开

    公开(公告)号：EP3734125A1

    公开(公告)日：2020-11-04

    申请号：EP20171690.9

    申请日：2020-04-28

    Applicant: The Gorman-Rupp Company

    Inventor： Liebhart, Larry P. ,  Stoffer, Michael L. ,  Redmond, Craig S.

    IPC: F16K1/44 ,  F04B53/06 ,  F16K17/20 ,  F16K24/00

    Abstract: A release valve (20) for a self-priming pump includes a housing, a valve member (68), an exhaust outlet (104), a guide stem (78), a spring (88), and a bellows (90). The valve is positioned in a valve opening (54) in the housing and is movable between an open and a closed position. The open position permits the travel of air and fluid through the opening. The closed position closes the valve opening. The valve plug is positioned in the valve opening responsive to pressure in the flow passageway of the housing. The guide stem is coupled to the valve plug and the spring is coupled to the guide stem. The bellows surrounds the spring.

    VALVE WITH SEGMENTED SPRING GUIDE ASSEMBLY
    8.
    发明公开
    VALVE WITH SEGMENTED SPRING GUIDE ASSEMBLY 审中-公开

    公开(公告)号：EP3546807A1

    公开(公告)日：2019-10-02

    申请号：EP19154255.4

    申请日：2019-01-29

    Applicant: Hamilton Sundstrand Corporation

    Inventor： DeFelice, Robert

    IPC: F16K17/20 ,  F16K24/00

    Abstract: Disclosed is a method of applying a biasing force against a piston (142) in a valve (140) as the piston moves along a piston stroke axis in a first direction and an opposing second direction, the piston having a first axial end that is a distal end of the piston, the method including: moving the piston along a piston stroke axis in the first direction and the opposing second direction, wherein while moving the piston along the piston stroke axis: applying a first biasing force in the second direction against the first axial end of the piston from a first spring, and applying a second biasing force in the second direction against the first spring from a second spring.

    FUEL TANK PRESSURE RELIEF VALVE
    9.
    发明公开
    FUEL TANK PRESSURE RELIEF VALVE 审中-公开

    公开(公告)号：EP3532756A1

    公开(公告)日：2019-09-04

    申请号：EP17790820.9

    申请日：2017-10-19

    Applicant: Fairfax 3d Design Limited

    Inventor： POULTER, Trevor John

    IPC: F16K17/196 ,  F16K17/36 ,  F16K24/00 ,  B60K15/035

    Abstract: A fuel tank pressure relief valve for relieving a pressure difference between the interior and the exterior of a fuel tank, comprises first and second sealing surfaces 120, 122 which mate to form a seal between the interior and exterior of the fuel tank; a valve control mechanism; and a venting port 112. The valve control mechanism is configured to: open the seal formed between the first and second sealing surfaces when the interior pressure at the valve control mechanism is above the exterior pressure by more than a first threshold differential pressure; open the seal formed between the first and second sealing surfaces when the interior pressure at the valve control mechanism is lower than the exterior pressure by more than a second threshold differential pressure; and close the seal formed between the first and second sealing surfaces in a closed configuration when the interior pressure at the valve control mechanism is not above the exterior pressure by more than a first threshold differential pressure and is not lower than the exterior pressure by more than a second threshold differential pressure.

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