专利名称：Dry-reed contact construction 发明人：Rolf Abele乡村振兴产业发展
申请号：US05/517238
杨红旗
申请日：19741023
公开号：US03961148A
铁陀螺公开日：
休假条19760601
专利内容由知识产权出版社提供
性资摘要：A dry-reed contact type of electrical switch is described. The dry- reed contacts have terminal elements constructed from a metal core having a copper covering. The terminal elements extend from the switch housing through fusible beads of printed glass in an airtight or gasproof manner. The material ud for the metal core is lected to have an expansion coefficient corresponding to that of the fusible beads. The metal core is covered, first, by copper and then, by nickel in a quantity ratio equal to or slightly less than 1 part nickel to 5 parts copper. The terminal elements are expod during the aling process to a temperature of from 750° to 980° C. during a melting period of such duration that at least 85 percent of the quantity of nickel coating is diffud into the copper.魔术师李丹
申请人：SIEMENS AKTIENGESELLSCHAFT
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