Itt Industries, Inc.

Rudolph Schadow Gmbh

Klaus Hinze

Klaus B Wisskirchen

Dieter Michalski

Manfred K Huth

Reinhard L Fricke

Rudolf Schadow

Alfred Heeb

Wolfgang Schulze

Klaus D Lamm

Hans-Georg Jost

Konstantin Rittaler

Werner H Fieber

A pushbutton switch having a contact actuating member movable in the direction of actuation, and a restoring spring which is loaded when the actuating member is depressed. A laterally resiliently deflectable detent element engages an inclined cam surface on the actuating member. When the member is depressed, the cam surface moves downwardly over the detent element causing the element to be laterally deflected, thereby releasing the detent mechanism. Thereafter, the actuating member is then free to move on against the force of the restoring spring.

Pushbutton switch with combined restoring-tactile feel spring

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 contact which migrates as a result of the bending of the leaf spring so that a high contact pressure is produced and a self-cleaning of the contacts is achieved.

Pushbutton switch having leaf-shaped contact spring

In a pushbutton switch or pushbutton-actuated slide switch having a detent mechanism designed to have the shape of a heart cam, an individual latching and a mutual unlatching is made possible in that, according to the invention, the heart cam is provided with a further, center curved path for the unlatching (disengaging) purpose. Within this area of the position of the detent pin, the latching is accomplished by a cross slide which, during the off-switching process, can be pressed via a limit stop and by the detent pin into the unlatching (disengaging) position.

Pushbutton switch or pushbutton-actuated slide switch

The locking bar for mutually acting upon several push button switches, which is slideably arranged within an U-shaped fastening bar for the switches, which are arranged in parallel to each other, consists of a metal bar with punched holes, on which plastic locking elements can be snapped-on. A great variety of locking bars can be built up using only two simple piece parts.

Pushbutton switch arrangement

A pushbutton switch of the type utilizing contact blades. The blades are the fixed contacts of the switch and consist of a U-shaped contact part and a straight connecting part joined therewith. The connecting part extends through an opening in the base of the U-shaped contact part and projects from opposite sides of the switch housing. Accordingly, the respective parts can be made of different materials and in an inexpensive and simple manner.

Pushbutton switch

A flat snap-action push-button switch comprising a sheetmetal spring with two elongated slots dividing the sheetmetal member into three coherent strips, is disclosed. The center strip is extended beyond the point of junction of the strips, and carries contacts which cooperate with fixed contacts on a printed circuit board. By depressing the center strip the spring snaps over thus opening one contact and closing another. The switch is particularly suited for use with key boards of electronic pocket calculators.

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Berlin, Germany

Klaus Hinze