Fish & Richardson
Reliable electrical connection between a stationary terminal and an armature of a switch
 A switch in which an armature swingably coupled to a stationary terminal is operated by a depression of a push button to trip between the contacts. A movable spring is laid between the stationary terminal and the armature to assist the trip of the armature and the stationary terminal is welded to the armature. The switch can be manufactured relatively readily without increase in the number of components, and is high in the reliability in electrical connection of the stationary terminal and the armature. 
Omron Corporation
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additional inventional inventional
Hiroyoshi Tomonori Masayuki Fumitaka Isao
Yamada Morimura Maeda Ohta Kato