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公开(公告)号：US4535908A
公开(公告)日：1985-08-20
申请号：US644875
申请日：1984-08-27
申请人： Robert M. Dabich
发明人： Robert M. Dabich
CPC分类号： E02D29/1463 , E02D29/1418 , Y10T16/5513
摘要： A double lid assembly is provided for a pre-fabricated pit designed for installation below the surface of an aircraft docking and refueling area. A first, heavier lid is mounted by hinges on the pre-fabricated pit for rotation about a horizontal axis. A second, lighter lid is seated within the confines of the first lid and is rotatable about a second axis parallel to the first. When the second, lighter lid is opened, it reduces the force necessary to open the first, heavier lid by reducing the torsional moment holding the heavier lid shut. As the heavier lid is opened, the lighter lid serves as a counter-balance to facilitate opening the heavier lid.
摘要翻译： 为设计用于安装在飞机对接和加油区域的表面下方的预制凹坑提供双盖组件。 通过铰链将第一较重的盖子安装在预制的凹坑上以围绕水平轴线旋转。 第二个更轻的盖子位于第一盖的限制内，并且可绕平行于第一盖的第二轴线旋转。 当打开第二个较轻的盖子时，通过减少将较重的盖子关闭的扭转力矩减小打开第一个较重的盖子所需的力。 当较重的盖子打开时，较轻的盖子用作平衡以便打开较重的盖子。
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公开(公告)号：US4467932A
公开(公告)日：1984-08-28
申请号：US538187
申请日：1983-10-03
申请人： Robert M. Dabich
发明人： Robert M. Dabich
CPC分类号： E02D29/1463 , E02D29/1418 , Y10T16/5513
摘要： A servo power system is provided for the heavy lid of a pit designed for installation below the surface of an aircraft docking and refueling area. For one embodiment, a counterbalancing system is shown. The lid is mounted for rotation at the top of a pit wall about lid hinges lying along a horizontal axis. A counterweight is secured for rotation about a horizontal counterweight axis which is located below and parallel to the lid axis. Meshed gear sections on the lid and on the counterweight couple the lid and counterweight to move together in counter-rotation relative to each other. The weight of the lid is largely balanced by the weight of the counterweight, thereby facilitating opening and closing of the pit lid.
摘要翻译： 为设计用于安装在飞机对接和加油区域的表面下方的凹坑的重型盖子提供伺服电力系统。 对于一个实施例，示出了平衡系统。 盖子围绕围绕水平轴线的盖铰链安装在凹坑壁的顶部旋转。 固定配重用于围绕位于盖轴线下方并平行的水平配重轴线旋转。 盖子和配重上的啮合齿轮部分将盖子和配重联合在一起以相对于彼此反向旋转。 盖子的重量通过配重的重量大部分平衡，从而便于打开和关闭凹坑盖。
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公开(公告)号：US4600114A
公开(公告)日：1986-07-15
申请号：US538188
申请日：1983-10-03
申请人： Robert M. Dabich
发明人： Robert M. Dabich
摘要： An explosion proof vault for housing electrical equipment is isolated from ambient air by the provision of an auxiliary expansion chamber. The auxiliary expansion chamber is coupled to the explosion proof casing and an inelastic bladder is located in the auxiliary expansion chamber in fluid communication with the explosion proof casing. An airtight seal around the mouth of the bladder prevents the passage of air between the explosion proof casing and the auxiliary expansion chamber except within the bladder.
摘要翻译： 用于容纳电气设备的防爆保险库通过设置辅助膨胀室与环境空气隔离。 辅助膨胀室联接到防爆外壳，非弹性气囊位于辅助膨胀室中，与防爆外壳流体连通。 膀胱口周围的气密密封阻止了防爆外壳和辅助膨胀室之间的空气通道，除了膀胱外。
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