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1. 发明授权

US3802479A Condition - resposive closure device 失效
标题翻译：条件 - 反应式封闭装置
公开(公告)号：US3802479A
公开(公告)日：1974-04-09
申请号：US25465172
申请日：1972-05-18
申请人： NEWELL A , WOLFE L
发明人： WOLFE L , NEWELL A
IPC分类号： E05F15/20 , F24F11/00
CPC分类号： A01K1/007 , E05F15/71 , E05Y2400/40 , E05Y2400/42 , E05Y2800/21 , F24F11/0001
摘要： The disclosure pertains generally to curtain-raising and lowering mechanisms and, more particularly, to automaticallyoperated mechanisms used in connection with cable or rope suspension systems for controlling curtains on animal enclosures, such as cattle sheds, hog parlors and poultry houses, for example. When temperatures within the enclosure are sufficiently high, the curtain is automatically moved to an open position to facilitate appropriate ventilation. When outside temperatures are low, the curtain is normally closed to conserve heat, but is opened automatically when the interior humidity reaches dangerously high levels. Additional controls are provided whereby heavy rainfall or high winds will cause the curtains to close partially to minimize the effects thereof on the interior environment. Similarly, an interior ammonia detector causes the curtain to open partially when ammonia levels become dangerously high.
摘要翻译：本公开总体上涉及帘式升降机构，更具体地，涉及用于控制动物外壳例如牛棚，猪棚和家禽舍的窗帘的电缆或绳索悬挂系统所使用的自动操作机构，例如。当外壳内的温度足够高时，窗帘将自动移动到打开位置，以方便适当的通风。外部温度低时，窗帘通常关闭以节约热量，但内部湿度达到危险的高水平时会自动打开。提供了额外的控制措施，即强降雨或大风会导致窗帘部分关闭，以尽量减少其对室内环境的影响。类似地，当氨水平变得危险地高时，内部氨检测器使窗帘部分打开。

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