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公开(公告)号:US4660805A
公开(公告)日:1987-04-28
申请号:US756444
申请日:1985-07-18
CPC分类号: F16K3/0227 , C21B7/002
摘要: The invention relates to a device for shutting off a pipe using generally U-shaped spring steel strips as sealing elements, each such element comprising a pair of arms which converge toward one another form an arcuate web at an acute angle. The deformation of the two flat arms of these sealing elements is limited by two flat, rigid rolling surfaces which are tangential to the web. Such a construction is distinguished by satisfactory functioning and a long working life.
摘要翻译: 本发明涉及一种用于使用大致U形的弹簧钢带作为密封元件来关闭管子的装置,每个这样的元件包括一对彼此会聚的臂,形成一个弧形的腹板。 这些密封元件的两个平坦臂的变形受到与腹板相切的两个平坦的刚性滚动表面的限制。 这种结构的特征在于令人满意的功能和长的使用寿命。