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14 条记录 (耗时 0.013 秒)

    Check valves and venturi devices having the same
    5.
    发明授权
    Check valves and venturi devices having the same 有权

    公开(公告)号：US10190549B2

    公开(公告)日：2019-01-29

    申请号：US15878580

    申请日：2018-01-24

    申请人： Dayco IP Holdings, LLC

    发明人： David E. Fletcher ,  Brian M. Graichen ,  Matthew C. Gilmer ,  Andrew D. Niedert ,  James H. Miller ,  Keith Hampton

    IPC分类号： F02M35/10

    摘要： Check valves, Venturi devices and engines having such check valves, define an internal cavity having a first port and a second port, a first seat and a second seat, and a translatable seal disk. The check valves have an outlet conduit extending from the second port and/or the first seat has a first annular seal bead and a second annular seal bead disposed radially inward of the first annular seal bead with a plurality of ribs extending between the first annular seal bead and the second annular seal bead within the fluid flow path of the first port. The outlet conduit defines an outlet passageway having a restrictor profile that is circular in a transverse profile, and the ribs decrease the flow area of the fluid flow path of the first port by about 10% to about 60%.

    Aspirators for producing vacuum using the venturi effect
    9.
    发明授权
    Aspirators for producing vacuum using the venturi effect 有权

    公开(公告)号：US10525952B2

    公开(公告)日：2020-01-07

    申请号：US16403845

    申请日：2019-05-06

    申请人： Dayco IP Holdings, LLC

    发明人： David E. Fletcher ,  Brian M. Graichen ,  Keith Hampton ,  Matthew C. Gilmer ,  Andrew D. Niedert

    IPC分类号： B60T13/52 ,  B60T17/02

    摘要： A Venturi device for producing vacuum from fluids in an engine system has a body defining a Venturi gap separating apart an outlet end of a converging motive section and an inlet end of a diverging discharge section by a lineal distance, and a suction port in fluid communication with the Venturi gap. The converging motive section and the diverging discharge section both gradually, continuously taper toward the Venturi gap, the converging motive section defines a circular-shaped motive inlet and an elliptical- or polygonal-shaped motive outlet, the diverging discharge section defines an elliptical- or polygonal-shaped discharge inlet, and an inner passageway of the converging motive section transitions as a hyperbolic function from the motive inlet to the elliptical- or polygonal-shaped motive outlet.

    Bypass check valve and Venturi having same
    10.
    发明授权
    Bypass check valve and Venturi having same 有权

    公开(公告)号：US10473235B2

    公开(公告)日：2019-11-12

    申请号：US16000443

    申请日：2018-06-05

    申请人： DAYCO IP HOLDINGS, LLC

    发明人： Andrew D. Niedert ,  Brian M. Graichen

    IPC分类号： F16K47/04 ,  F16K15/02 ,  F02M35/10 ,  B60T17/02 ,  B60T17/04 ,  F02M35/12

    摘要： Check valves are disclosed and include a housing defining an internal cavity having a first seat and a second seat, and a seal member within the internal cavity translatable between a closed position against the first seat and an open position against the second seat. The second seat has a middle axis transverse to a plane of a longitudinal cross-section of the housing and has a shortest finger positioned to either the left or to the right of the middle axis. The seal member is seatable against the second seat at an angle or in a deflected position against the plurality of fingers, thereby defining a longer distance of travel to reach the closed position for a portion of the check valve disc that is associated with the position of the shortest finger relative to other portions of the check valve disc.