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    Exhalation Valve And Respirator Including Same
    1.
    发明申请
    Exhalation Valve And Respirator Including Same 有权

    公开(公告)号：US20210283434A1

    公开(公告)日：2021-09-16

    申请号：US16332413

    申请日：2017-09-12

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Philip D. Eitzman ,  Thomas J. Xue

    IPC: A62B18/10 ,  F16K1/226 ,  A41D13/11

    Abstract: Various embodiments of an exhalation valve and a filtering face mask that includes such exhalation valve are disclosed. The exhalation valve can include a valve seat and a valve flap disposed over a seal surface and an orifice of the valve seat. The valve flap is adapted to be sealed against the seal surface of the valve seat when the exhalation valve is disposed in a closed configuration such that fluid is prevented from flowing through the valve seat. The orifice of the valve seat can include a substantially circular shape in a plane defined by a first major surface of the valve seat. Further, the seal surface can circumscribe the orifice and can include a substantially noncircular shape in the plane defined by the first major surface of the valve seat.

    EXHALATION VALVE AND RESPIRATOR INCLUDING SAME
    3.
    发明申请
    EXHALATION VALVE AND RESPIRATOR INCLUDING SAME 有权

    公开(公告)号：US20240416157A1

    公开(公告)日：2024-12-19

    申请号：US18814922

    申请日：2024-08-26

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Philip D. Eitzman ,  Thomas J. Xue

    IPC: A62B18/10 ,  A41D13/11 ,  F16K1/226

    Abstract: Various embodiments of an exhalation valve and a filtering face mask that includes such exhalation valve are disclosed. The exhalation valve can include a valve seat and a valve flap disposed over a seal surface and an orifice of the valve seat. The valve flap is adapted to be sealed against the seal surface of the valve seat when the exhalation valve is disposed in a closed configuration such that fluid is prevented from flowing through the valve seat. The orifice of the valve seat can include a substantially circular shape in a plane defined by a first major surface of the valve seat. Further, the seal surface can circumscribe the orifice and can include a substantially noncircular shape in the plane defined by the first major surface of the valve seat.

    Exhalation valve and respirator including same
    4.
    发明授权
    Exhalation valve and respirator including same 有权

    公开(公告)号：US12070634B2

    公开(公告)日：2024-08-27

    申请号：US16332413

    申请日：2017-09-12

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Philip D. Eitzman ,  Thomas J. Xue

    IPC: A62B18/10 ,  A41D13/11 ,  F16K1/226

    CPC classification number: A62B18/10 ,  A41D13/11 ,  F16K1/226

    Abstract: Various embodiments of an exhalation valve and a filtering face mask that includes such exhalation valve are disclosed. The exhalation valve can include a valve seat and a valve flap disposed over a seal surface and an orifice of the valve seat. The valve flap is adapted to be sealed against the seal surface of the valve seat when the exhalation valve is disposed in a closed configuration such that fluid is prevented from flowing through the valve seat. The orifice of the valve seat can include a substantially circular shape in a plane defined by a first major surface of the valve seat. Further, the seal surface can circumscribe the orifice and can include a substantially noncircular shape in the plane defined by the first major surface of the valve seat.

    RESPIRATOR THAT HAS INWARD NOSE REGION FOLD WITH HIGH LEVEL CONFORMATION
    10.
    发明申请
    RESPIRATOR THAT HAS INWARD NOSE REGION FOLD WITH HIGH LEVEL CONFORMATION 审中-公开

    公开(公告)号：US20180169447A1

    公开(公告)日：2018-06-21

    申请号：US15899143

    申请日：2018-02-19

    Applicant: 3M Innovative Properties Company

    Inventor： Philip D. Eitzman ,  Dean R. Duffy

    IPC: A62B18/02 ,  A62B23/02 ,  A41D13/11

    CPC classification number: A62B18/025 ,  A41D13/1123 ,  A62B23/025

    Abstract: A flat fold filtering face piece respirator 10 that includes a mask body 12 and a harness 14. The mask body 12 includes a filtering structure 16 that contains a cover web 48, 50 and a filtration layer 52 that contains electrically-charged microfibers. The filtering structure 16 is folded over upon itself in a nose region 32 of the mask body 12 to be at least 1 centimeter or more wide and to extend across the upper perimeter of the mask body in a generally straight line when the respirator is in the folded condition. The filtering structure 16 has a deflection greater than about 0.5 millimeters and has a recoverability of at least 40% in the folded condition. A mask body having this construction is beneficial in that it does not need to use a nose foam to obtain a snug fit over the nose.

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