A pushbutton switch is provided comprising a leaf spring with slotted leaf ends for forming a double contact and a fixed contact arranged transversely in relation thereto. The slotted spring ends, in the direction of the leaf spring axis, are provided with groove-shaped stampings. This results in a point-shaped...http://www.google.es/patents/US4514609?utm_source=gb-gplus-sharePatente US4514609 - Pushbutton switch having leaf-shaped contact spring
Pushbutton switch having leaf-shaped contact spring
