Portable safety post
    1.
    发明授权

    公开(公告)号:US4729453A

    公开(公告)日:1988-03-08

    申请号:US43334

    申请日:1987-04-28

    CPC分类号: E06C1/38 E06C7/182 E06C9/06

    摘要: A safety post assembly for assisting entry to or exit from the upper portion of a wall having mounted thereon a series of rungs forming a ladder, the assembly comprising a tubular support sleeve; adjustable mounting means for securing the sleeve to the rungs in an upstanding position; an elongated extension rod having a tapered lower end portion for sliding insertion into the tubular sleeve and an opposite upper end portion adapted to extend above the upper portion of the structure and provide grasping means during the entry and exit; a projection extending outwardly from the extension rod, and adapted to rest against the upper end of the sleeve for limiting insertion of the rod lower end portion into the sleeve to a predetermined distance sufficient to support the weight of a person grasping the rod upper end portion during the entry and exit; and a step member extending transversely on opposite sides of the extension rod between the upper and lower end portions and positioned to provide a foothold in the vicinity of the upper portion of the structure during the entry and the exit, the transverse member including a flange on either side of the extension rod and bolt means passing through the extension rods and the flanges to secure the member to the rod. The extension rod is entirely directly removable from the sleeve by grasping the rod and urging the rod in an upward direction. The assembly further includes means to counterbalance the weight of the extension rod when the lower end of the rod is inserted in the support sleeve, the counterbalance means comprising a spring disposed within the sleeve, the spring having a first end portion secured to the sleeve and a second end portion biased into a wound coil, the spring second end portion being engagable by the rod lower end portion to unwind the coil as the rod is inserted to the predetermined distance, the spring offsetting a substantial portion of the weight of the extension rod when the rod is inserted into the sleeve.

    Hold open arm assembly
    2.
    发明授权
    Hold open arm assembly 有权
    握住开放臂组件

    公开(公告)号:US06347818B1

    公开(公告)日:2002-02-19

    申请号:US09629914

    申请日:2000-07-31

    IPC分类号: E05C1704

    摘要: A hold open arm assembly for a non-vertically hinged door prevents a door for a roof or floor opening from closing unexpectedly and allows one-handed operation. The assembly includes an elongated arm that bears directly against a stop aligned with the axis of the arm when a closing force, such as a wind load, is applied directly to the door. The arm has a guide that engages a guide slot in a bracket attached to the door. The guide slot is tapered and widens near the stop. When a closing force is applied to a handle connected to the arm, the guide moves parallel to the guide slot and the arm clears the stop, allowing the door to close. When the closing force is applied to the door, and not the handle, the guide moves perpendicular to the guide slot so that the arm engages the stop. The guide is provided with a low friction roller bearing for smooth operation.

    摘要翻译: 用于非垂直铰链门的保持开放臂组件防止屋顶或地板开口的门意外关闭,并允许单手操作。 该组件包括一个细长的臂,当诸如风载荷之类的关闭力被直接施加到门上时,该细长臂直接抵靠与臂的轴线对齐的止动件。 臂具有与附接到门的托架中的引导槽接合的引导件。 引导槽在停止点附近变细并变宽。 当向与臂连接的手柄施加闭合力时,引导件平行于引导槽移动,并且手臂清除止挡件,允许门关闭。 当关闭力被施加到门而不是手柄时,引导件垂直于引导槽移动,使得臂接合止动件。 导轨设有一个低摩擦滚子轴承,用于平稳运行。

    Door assembly with multiple torque rod counterbalancing
    3.
    发明授权
    Door assembly with multiple torque rod counterbalancing 失效
    具有多个扭矩杆平衡的门组件

    公开(公告)号:US5301469A

    公开(公告)日:1994-04-12

    申请号:US817768

    申请日:1992-01-08

    摘要: A counterbalanced door assembly particularly suited for heavy-duty load bearing applications such as sidewalk access doors, and for precasting into concrete slabs, comprises a door, a frame surrounding the door, a hinge connecting the door to the frame for rotation about a first axis, a torque rod arm mounted to rotate about a second axis displaced from the first axis, and one or more torque rods. One end of the torque rod arm is connected to the torque rod to twist the torque rod as the torque rod arm rotates about the second axis thereby generating a counterbalance force. A force control mechanism, which may be a cam with a properly shaped cam surface or a link hinged at either end, receives the counterbalance force from the torque rod arm and applies it in a controlled direction over a controlled effective moment arm relative to the first axis to generate the desired counterbalance torque.

    摘要翻译: 特别适用于诸如人行道进入门的重型承重应用以及用于预混入混凝土板的平衡门组件包括门,围绕门的框架,将门连接到框架以使其围绕第一轴线旋转的铰链 ,安装成围绕从第一轴线移位的第二轴线旋转的扭矩杆臂和一个或多个扭矩杆。 转矩杆臂的一端连接到转矩杆,随着扭力杆臂围绕第二轴线旋转从而扭转扭矩杆,从而产生平衡力。 力控制机构,其可以是具有适当形状的凸轮表面的凸轮或在任一端铰接的连杆,从转矩杆臂接收平衡力,并将其以受控的方向施加在受控的有效力矩臂上,相对于第一 轴以产生所需的平衡扭矩。

    Extendable railing
    4.
    发明授权
    Extendable railing 失效
    可扩展栏杆

    公开(公告)号:US4688768A

    公开(公告)日:1987-08-25

    申请号:US851739

    申请日:1986-04-14

    IPC分类号: E04F11/04 E04F11/18 E04H17/14

    摘要: An extendable railing for use in stairwells, hallways and the like. The railing comprises an elongated moveable member nonrotatably but slidably mounted inside an elongated fixed, hollow member. The moveable member is supported on at least one friction reducing spacing means for movement from a first retracted to a second extended position with counterbalance means. The railing further comprises means for stopping said movement and for locking said moveable member in the extended position.

    摘要翻译: 用于楼梯间,走廊等的可伸缩栏杆。 栏杆包括不可旋转但可滑动地安装在细长的固定的中空构件内的细长的可移动构件。 可移动构件被支撑在至少一个摩擦减小间隔装置上,用于利用平衡装置从第一缩回运动到第二延伸位置。 栏杆还包括用于停止所述移动并将所述可移动构件锁定在伸出位置的装置。

    Door assembly with augmented counterbalancing
    5.
    发明授权
    Door assembly with augmented counterbalancing 失效
    门组件增强平衡

    公开(公告)号:US5373665A

    公开(公告)日:1994-12-20

    申请号:US045964

    申请日:1993-04-09

    摘要: A counterbalancing assembly and a non-vertically hinged door assembly incorporating the same include a first pair of torque rods directly connected between the door and a frame which produce a partial counterbalancing torque. A second pair of torque rods acting through cams produce an augmenting counterbalancing torque such that the sum of the partial and augmenting torques fully counterbalance the door throughout its arc of motion.

    摘要翻译: 平衡组件和并入其中的非垂直铰链门组件包括直接连接在门和框架之间的第一对扭矩杆,其产生部分平衡转矩。 通过凸轮作用的第二对扭矩杆产生增大的平衡扭矩,使得部分和增大扭矩的总和在整个运动弧度下完全抵消门的平衡。

    Torque rod counterbalanced door assembly
    6.
    发明授权
    Torque rod counterbalanced door assembly 失效
    扭矩门平衡门总成

    公开(公告)号:US5136811A

    公开(公告)日:1992-08-11

    申请号:US579924

    申请日:1990-09-07

    摘要: A counterbalanced door assembly particularly suited for heavy-duty load bearing applications such as sidewalk access doors, and for precasting into concrete slabs, comprises a door, a frame surrounding the door, a hinge connecting the door to the frame for rotation about a first axis, a torque rod arm mounted to rotate about a second axis displaced from the first axis, and one or more torque rods. One end of the torque rod arm is connected to the torque rod to twist the torque rod as the torque rod arm rotates about the second axis thereby generating a counterbalance force. A force control mechanism, which may be a cam with a properly shaped cam surface or a link hinged at either end, receives the counterbalance force from the torque rod arm and applies it in a controlled direction over a controlled effective moment arm relative to the first axis to generate the desired counterbalance torque.