CONTACT HEARING PROTECTION DEVICE
    2.
    发明申请

    公开(公告)号:US20200186942A1

    公开(公告)日:2020-06-11

    申请号:US16790455

    申请日:2020-02-13

    IPC分类号: H04R25/00

    摘要: A contact hearing protection device is provided. The contact hearing protection device comprises a perimeter platform, a chassis connected to the perimeter platform, a control system including at least one variable limiting element, and an umbo platform connected to the at least one limiting element. A sound level which meets or exceeds a predetermined level is detected, as can be indicated by an increased magnitude of movement of the umbo platform, and the limiting element increases the limiting in response to the increased magnitude of movement of the umbo platform.

    CONTACT HEARING PROTECTION DEVICE

    公开(公告)号:US20220086572A1

    公开(公告)日:2022-03-17

    申请号:US17532949

    申请日:2021-11-22

    IPC分类号: H04R25/00

    摘要: A contact hearing protection device is provided. The contact hearing protection device comprises a perimeter platform, a chassis connected to the perimeter platform, a control system including at least one variable limiting element, and an umbo platform connected to the at least one limiting element. A sound level which meets or exceeds a predetermined level is detected, as can be indicated by an increased magnitude of movement of the umbo platform, and the limiting element increases the limiting in response to the increased magnitude of movement of the umbo platform.