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1. 发明授权

US3974349A Circuit breaker with automatically adjustable contact pressure 失效
标题翻译：断路器可自动调节接触压力
公开(公告)号：US3974349A
公开(公告)日：1976-08-10
申请号：US586764
申请日：1975-06-13
申请人： Karl D. Olafsen
发明人： Karl D. Olafsen
IPC分类号： H01H31/24 , H01H1/50 , H01H5/04 , H01H33/34 , H01H33/62 , H01H35/38
CPC分类号： H01H33/34 , H01H1/50 , H01H5/04
摘要： A switch or circuit breaker that provides a high contact pressure when closed and provides a reduced and automatically regulated contact pressure during opening and closing. In one embodiment a pair of contacts is mounted opposite one another and one of the contacts is carried at one end of a pivotably mounted lever so that it can move towards and away from the other by a movement of the other end of the lever. A fluid operated cylinder arrangement is provided to move the switch blade from a first disengaged position to a second engaged position between the blades. The cylinder is mounted on a mechanical linkage so that the linkage is deflected in accordance with the resistance of the blade to movement, and the deflection of the linkage moves the lever tending to decrease contact pressure. A balance is reached between contact pressure and the blade movement tending to maintain a constant and reduced contact pressure during opening and closing.
摘要翻译：开关或断路器，在闭合时提供高接触压力，并在开启和关闭期间提供减小且自动调节的接触压力。在一个实施例中，一对触点彼此相对地安装，并且一个触点被承载在可枢转地安装的杠杆的一端，使得其可以通过杠杆的另一端的运动而朝向另一端移动并远离彼此。设置流体操作的气缸装置以将开关叶片从第一脱离位置移动到叶片之间的第二接合位置。气缸安装在机械联动装置上，使得联动装置根据叶片抵抗运动的阻力而偏转，并且联动装置的偏转使杆移动以减小接触压力。在接触压力和叶片运动之间达到平衡，倾向于在打开和关闭期间保持恒定和降低的接触压力。

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