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1. 发明公开

EP0505173A1 Animal headgate with an automatic locking mechanism 失效
标题翻译： Tierbehandlungsgitter mit automatischer Verriegelungsvorrichtung。
公开(公告)号：EP0505173A1
公开(公告)日：1992-09-23
申请号：EP92302349.3
申请日：1992-03-18
申请人： Priefert, William D.
发明人： Priefert, William D.
IPC分类号： A61D3/00 , A01K1/06
CPC分类号： A01K1/062 , A61D3/00
摘要： An animal headgate (10) has a rectangular frame in which a pair of neck-engaging yokes (12,14) is mounted for coordinated sliding movement between a fully open position and a fully closed position. A parallelogram linkage interconnects each yoke to an associated sleeve (28,30) on the rectangular frame so that movement of the sleeve between an upper and a lower position will move the yokes (12,14) between the fully open and the fully closed position, respectively. An over-center spring arrangement urges the yokes (12,14) from a neutral, open position toward the fully closed position. A unidirectional locking mechanism (44) associated with each of the posts permits the spring arrangements to close the yokes about the neck of an animal but prevents unassisted opening of the yokes (12,14) thereby restraining the animal. A notched bar (70) and associated catch (72) mounted on the upper end portions of the yokes provide for automatic operation of the headgate (10). The spring arrangements act to hold the notched bar (70) in the catch (72) at a preselected open position for the yokes (12,14). Opening pressure on the yokes from the shoulders of an animal that has inserted its head through the yokes will release the notched bar (70) and permit the spring arrangement to move the yokes (12,14) to engage the neck of the animal.
摘要翻译：动物头盖（10）具有矩形框架，其中安装有一对颈部接合轭（12,14），用于在完全打开位置和完全关闭位置之间进行协调的滑动运动。平行四边形连杆将每个轭连接到矩形框架上的相关联的套筒（28,30）上，使得套筒在上部位置和下部位置之间的移动将使轭（12,14）在完全打开和完全关闭位置之间移动，分别。中心的中心弹簧装置将轭（12,14）从中立的打开位置推向完全关闭位置。与每个柱相关联的单向锁定机构（44）允许弹簧布置以围绕动物的颈部封闭轭，但是阻止轭（12,14）的无辅助打开从而限制动物。安装在轭架的上端部的切口杆（70）和相关联的止动件（72）提供头盖（10）的自动操作。弹簧装置用于将锁定杆（70）保持在用于轭（12,14）的预选的打开位置上。从将头部穿过轭的动物的肩膀开启的轭的开启压力将释放切口的杆（70）并允许弹簧装置移动轭（12,14）以接合动物的颈部。

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