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1. 发明授权

US5197226A Access door with safety latch for pressurized air chambers 失效
标题翻译：检修门带加压气室的安全闩
公开(公告)号：US5197226A
公开(公告)日：1993-03-30
申请号：US735568
申请日：1991-07-25
申请人： Edward E. Gayhart, Jr. , John W. Coursen , Dwight R. Kirk
发明人： Edward E. Gayhart, Jr. , John W. Coursen , Dwight R. Kirk
IPC分类号： E05B65/00 , E05C3/04
CPC分类号： E05B65/001 , E05C3/045 , Y10T292/1041
摘要： An access door assembly for a pressurized windbox, comprising a door frame having an opening with a post extending from the door frame. A door is pivotally mounted to the frame at a hinge. A latch is pivotally mounted to the door and includes a hook which engages the post for locking the door to the frame. The latch also includes a catch member extending beyond the hook for catching the post when the latch is moved to unlock the door. This stops the door in an intermediate partly open position allowing gusts of air to blow through the opening thereby giving the operator a warning and indication that the windbox is in fact under pressure. In this manner, an operator has sufficient time to step out of the way before moving the latch further, thereby fully disengaging the latch from the post and allowing the door to open fully.
摘要翻译：一种用于加压风箱的通道门组件，包括门框，所述门框具有带有从门框延伸的柱的开口。门在铰链处可枢转地安装在框架上。闩锁枢转地安装到门上，并且包括钩子，该钩子将柱子接合以将门锁定到框架。闩锁还包括延伸超过钩的止动构件，以在闩锁被移动以解锁门时捕捉柱。这使得门处于中间部分打开位置，允许阵风吹过开口，从而给操作者警告并指示风箱事实上处于压力之下。以这种方式，操作者在进一步移动闩锁之前具有足够的时间步出，从而使闩锁与柱完全脱离并允许门完全打开。

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