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2. 发明授权

US3952995A Lifter mechanism for spring-loaded valve 失效
标题翻译：弹簧加载阀升降机构
公开(公告)号：US3952995A
公开(公告)日：1976-04-27
申请号：US574258
申请日：1975-05-05
申请人： Shin-Ichi Nagumo , Tatuhiro Yuta
发明人： Shin-Ichi Nagumo , Tatuhiro Yuta
IPC分类号： F01L9/02 , F01L9/04 , F16K31/44
CPC分类号： F16K31/44 , F01L9/02 , F01L9/04 , Y10T74/18992
摘要： A linkage for pulling a valve stem against resistance of a compression spring comprises three link members; a first link member coaxially fixed to and extending from the stem, a second member pivoted at an end to the extending end of the first member and a third link member pivoted at an end to the second member at an intermediate point of the second member and pivotally mounted on a fixed shaft at the other end. An actuator exerts a constant force on the free end of the second link and rotates the second link about both the pivots for the first and third links, resulting in pulling the valve stem with a progressively increasing force.
摘要翻译：用于拉动阀杆以抵抗压缩弹簧的阻力的连杆包括三个连杆构件; 第一连杆构件，其同轴地固定到杆上并从杆延伸;第二构件，其一端在第一构件的延伸端处枢转;以及第三连杆构件，其在第二构件的中间点在一端枢转到第二构件，枢转地安装在另一端的固定轴上。致动器在第二连杆的自由端施加恒定的力，并使第二连杆围绕第一和第三连杆的枢轴旋转，导致阀杆以逐渐增加的力拉动。

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