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    • 4. 发明授权
    • Vented hatch cover
    • 通风舱盖
    • US4819830A
    • 1989-04-11
    • US155088
    • 1988-02-11
    • Francis R. Schultz
    • Francis R. Schultz
    • B65D51/16F16J13/20
    • B61D5/08F16J13/20
    • A vented hatch cover for an enclosed vessel having a shell member sized to overlie and cover a hatch opening defined by an upstanding coaming. It includes a peripheral seal to seal against coaming. The shell member has at least one air passage extending through it. A wall is integrally formed on the shell member and defines a plenum in communication with the air passage. The wall extends outward beyond the peripheral seal and there defines an air intake opening for admitting air to the plenum. An air filter is housed in the plenum.
    • 封闭容器的通风舱盖,其具有壳体构件的尺寸以覆盖并覆盖由直立的围板限定的舱口。 它包括一个周边密封件,用于密封隔热罩。 壳体具有延伸穿过其的至少一个空气通道。 壁部一体地形成在壳体上并限定与空气通道连通的气室。 墙壁向外延伸超过周边密封件,并且限定了用于将空气引入通风室的进气口。 空气过滤器安装在通风室中。
    • 5. 发明授权
    • Safety locking cover assembly for tank domes
    • 罐盖安全锁盖组件
    • US4024983A
    • 1977-05-24
    • US643522
    • 1975-12-22
    • Herman D. Muehl
    • Herman D. Muehl
    • F16J13/20B65D45/00
    • F16J13/20Y10T292/225Y10T292/23
    • A safety locking cover assembly for the dome of a tank truck of the type adapted to carry inflammable liquids. A cover is hinged upon a base attachable to the tank dome, and is moved between opened and closed positions by upward pivotal movement of a semicircular handle. The opposite ends of the handle pivot upon a locking bar extending beneath the cover top. The ends of the bar project from opposite sides of the cover and extend into recesses in catches mounted to the base, thereby normally preventing upward movement of the cover relative to the catches. However, the catches are spring biased against the base and are upwardly movable against the spring bias by high internal tank pressures. This provides a relatively large vent opening to vent the tank despite the fact that the handle may be closed. The cover can be manually opened by pivoting the handle through a 180.degree. arc. This moves the locking bar downwardly relative to the catches on the base. This allows limited upward vertical movement of the locking bar and cover relative to the catches and any slight buildup of internal tank pressure is relieved before the cover is hinged upwardly to its open position. Movement of the pivoted handle circumferentially in the plane of the cover positions the locking bar out of alignment with the restraining catches and the cover can be hingedly moved to an open position. Alternative rapid mounting and demounting means for the tank dome are also disclosed.
    • 一种适用于携带易燃液体的罐车的圆顶的安全锁盖组件。 一个盖铰接在一个可装在罐顶上的基座上,并通过一个半圆形手柄向上的枢转运动而在打开和关闭位置之间移动。 手柄的相对端在覆盖顶部下方延伸的锁定杆上枢转。 杆的端部从盖的相对侧突出并且延伸到安装到基部的卡扣中的凹槽中,从而通常防止盖相对于卡扣向上运动。 然而,卡扣被弹簧偏置抵靠基座,并且通过高的内部罐压力可以克服弹簧偏压向上移动。 这提供了相对较大的通风口以排出罐,尽管手柄可能被关闭。 可以通过将手柄旋转180°弧来手动打开盖子。 这使得锁定杆相对于底座上的卡扣向下移动。 这允许锁定杆和盖相对于卡扣的有限的向上垂直运动,并且在盖被向上铰接到其打开位置之前缓解内部罐压力的任何轻微积累。 枢转手柄在盖子的平面中周向移动,使得锁定杆与限制卡扣不对准,并且盖可以铰接地移动到打开位置。 还公开了用于罐顶的替代的快速安装和拆卸装置。