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    Door operator with screw drive
    21.
    发明授权
    Door operator with screw drive 失效
    带螺丝刀的门操作器

    公开(公告)号：US3996697A

    公开(公告)日：1976-12-14

    申请号：US644193

    申请日：1975-12-24

    Applicant: Morris W. Bailey ,  Donald S. Harris ,  Nesbitt A. Boyles ,  Victor Sumnicht

    Inventor： Morris W. Bailey ,  Donald S. Harris ,  Nesbitt A. Boyles ,  Victor Sumnicht

    IPC: E05F15/00 ,  E05F15/16 ,  E05F15/10

    CPC classification number: E05F15/41 ,  E05F15/673 ,  E05Y2900/106

    Abstract: An operator for opening and closing an upwardly acting door, which operator includes an elongated rotatable drive screw having one end thereof drivingly connected to a power unit and the other end thereof disposed adjacent the upper edge of the door opening. The rotatable drive screw has a carriage engaged therewith which is slidably confined by an elongated guide rail for slidable movement therealong, which carriage is connected by a drawbar to the door for controlling the movement thereof. A floatable bearing arrangement is slidably disposed within the rail and has portions thereof positioned on opposite sides of the carriage so as to be movable along the rail in response to carriage movement, thereby providing an intermediate support for the drive screw. The drive screw is supported for limited axial movement and coacts with a control device for causing reversing of the door movement when the door strikes an obstruction when moving in its closing direction. Upon striking an obstruction, the reaction of the drive mechanism causes a slight axial movement of the screw in a direction away from the door opening, which in turn activates the control device and its associated switch for reversing the door movement. The control device is independent of the limit switches which deactivate the power unit when the door reaches its fully opened and fully closed positions.

    Abstract translation: 用于打开和关闭向上作用的门的操作者，操作者包括细长的可旋转的驱动螺钉，其一端与动力单元驱动连接，另一端设置在门开口的上边缘附近。 可旋转的驱动螺杆具有与其接合的滑架，其可滑动地限制在细长的导轨上，以便可滑动地移动，该滑架通过牵引杆连接到门以控制其移动。 可浮动的轴承装置可滑动地设置在轨道内并且其部分位于滑架的相对侧上，以便响应于滑架移动而沿导轨移动，从而为驱动螺杆提供中间支撑。 驱动螺钉被支撑用于有限的轴向运动，并且与控制装置共同作用以当门在其关闭方向上移动时撞击障碍物时引起门运动的反转。 当撞击障碍物时，驱动机构的反作用力导致螺杆在远离门开口的方向上轻微的轴向运动，这反过来又激活了控制装置及其相关联的开关，以反转门的运动。 控制装置独立于限位开关，当门达到其完全打开和完全关闭位置时，限位开关将停用动力单元。

    Cube ice making machine and method
    22.
    发明授权
    Cube ice making machine and method 失效
    CUBE制冰机和方法

    公开(公告)号：US3766744A

    公开(公告)日：1973-10-23

    申请号：US3766744D

    申请日：1972-11-02

    Applicant: MORRIS W

    Inventor： MORRIS W

    IPC: F25C1/12 ,  F25D21/06

    CPC classification number: F25C1/12

    Abstract: Automatic ice making apparatus for making cube ice, including a plurality of upright evaporators having opposite ice-forming surfaces defining plural cells for molding cube ice, water headers for discharging water downwardly onto the surfaces during the freezing cycle, and a compressor and condenser-receiver circuit including an auxiliary receiver circuit including an auxiliary receiver for supplying liquid refrigerant through an expansion valve to the evaporators during the freezing cycle. A conduit between the condenser-receiver and the auxiliary receiver is valved closed about a minute before the end of the freezing cycle to accumulate an overcharge of liquid refrigerant in the condenser-receiver to be converted to flash gas and transferred to the evaporators at the beginning of the harvesting cycle to aid defrost. Return of suction gas having enough wetness to absorb the heat out of the compressor walls during defrost is achieved, and make-up water to a sump is cooled by returning suction gas during the freezing cycle.

    Abstract translation: 用于制造立方冰的自动制冰装置，包括具有限定用于成型立方体冰的多个单元的相反的成冰表面的多个立式蒸发器，用于在冷冻循环期间将水向下排放到表面上的水集管，以及压缩机和冷凝器接收器 包括辅助接收器电路，该辅助接收器电路包括用于在冷冻循环期间通过膨胀阀将液体制冷剂供应到蒸发器的辅助接收器。 在冷凝器接收器和辅助接收器之间的管道在冷冻循环结束之前约一分钟被关闭，以在冷凝器 - 接收器中累积液体制冷剂的过度充电以转换成闪蒸气体，并在开始时转移到蒸发器 的收获周期来帮助除霜。 返回具有足够湿度的吸入气体，以在除霜期间从压缩机壁吸收热量，并且在冷冻循环期间通过返回吸入气体来冷却集水槽的补给水。

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