A method of producing a plurality of individual contact spring assemblies for use in an electromagnetic relay in which movable and fixed contact springs for each assembly are held by a molded resin base comprises the steps of caulking a first set of contacts and a second set of contacts to a unitary...http://www.google.es/patents/US4887347?utm_source=gb-gplus-sharePatente US4887347 - Method of producing a contact spring structure of an electromagnetic relay
Method of producing a contact spring structure of an electromagnetic relay
