Abstract: A spring electrical contact assembly having an elongated spring member with a contact adjacent a free end, the member mounted at an inner end in a slot opening in an insulated mounting body. The contact is urged by its spring force against a fixed contact carried by a stiff member mounted in the body. The inner end of the spring is fixed to a rigid spring carrier plate seated in the slot, the plate extending parallel to the elongation of the spring and having an edge at a right angle thereto intermediate the spring ends. The edge functions as a fulcrum point for the spring.

Abstract: A normally closed wafer thin switch, particularly intended for pilferage type burglar alarms, comprising a flat base plate of insulating material having an opening therein and a pair of leaf spring contacts attached to one peripheral portion of the plate and extending over the opening. Free ends of the contacts normally engage each other to complete a circuit. A raised tab on a first of the contacts overlies an opposite peripheral portion of the plate whereby, when an object is placed on or against the switch, the tab is depressed against the plate, causing opening of the switch.

Abstract: A switch comprising a pair of leaf springs having contacts and terminals at the both ends thereof, a base member supporting the leaf springs in a cantilever fashion in superposed relationship and a fulcrum member supporting one of the leaf springs so as to make the leaf spring moveable downwardly by pushing the end of the leaf spring.

Abstract: The present invention relates generally to keyboard systems and more particularly to an integral keyboard assembly which includes a plurality of keys, the bezel and the housing containing the contact strips sandwiched between the keys and a single sided printed circuit board on which are the conductive paths.

Abstract: An electrical switch including first and second fixed electrical contacts carried by the body of the switch. Fastened to the body is an L-shaped flexible strip which carries first and second movable contacts, one end of one limb of the L-shaped strip being secured to the body. In order to engage the first movable contact with the first fixed contact the strip is flexed along the length of said one limb, and in order to engage the second movable contact with the second fixed contact the strip is twisted along the length of said one limb.

Abstract: A multifinger contact device is produced by a series of deforming stations which compress the fingers into die cavities decreasing the width of the fingers while severing the adjacent fingers from one another, by deforming the adjacent fingers first in one direction and then in the other to decrease the formation of burrs. A subsequent forming station may be utilized to confine the entire periphery of the finger so as to form opposing longitudinal edges on adjacent fingers into noncontacting curved surfaces.