Plastic cement case
    1.
    发明授权
    Plastic cement case 失效
    塑胶水箱

    公开(公告)号:US3571989A

    公开(公告)日:1971-03-23

    申请号:US3571989D

    申请日:1967-02-24

    Applicant: RIXSON INC

    Abstract: An improved cement case for effecting the floor mounting of a door control unit, such as a door closer or door check, for controlling a swinging door. The case is made of impact resistant plastic material and supports metal anchors which, with the case, are embedded in cement. The door control unit which is disposed in the case is directly connectable with the metal anchors.

    Electromechanical door holder-closer
    2.
    发明授权
    Electromechanical door holder-closer 失效
    电动门保持架

    公开(公告)号:US3648326A

    公开(公告)日:1972-03-14

    申请号:US3648326D

    申请日:1969-11-21

    Applicant: RIXSON INC

    Abstract: An electromechanical door holder-closer to maintain remote failsafe holding of a door in an open position, and also to effect closure of the door in response to the application of a manual closing force, the opening of an operating switch, the malfunctioning of condition detection circuitry for fire or smoke, or, alternatively, the detection of an undesired condition.

    Abstract translation: 机电门保持器更靠近,以保持门处于打开位置的远程故障安全保持,并且还响应于手动关闭力的施加,操作开关的打开而使门关闭,故障 用于火灾或烟雾的状态检测电路,或者替代地,检测不期望的状况。

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