Itt Industries, Inc.

Rudolf Schadow

Klaus Hinze

Snap action switch with a sheet metal spring divided by slots into two or three coherent strips, one of which is shortened by way of bending. The bending is effected by clamping the strip between abutments formed by the upper and lower part of the housing. In this way a definite bending of the sheet metal spring is obtained.

Electrical snap-action switch

The noise suppression contact of a keyboard with a row of pushbutton-operated slide switches consists of a flat U-shaped contact spring forming a double armed lever one arm of which is actuated by the stop slider and the other contacting a fixed contact. The pushbutton operators are mutually interlocked by the stop slides. The noise suppression contact assembly is activated momentarily during the change over from one desired switching mode of operation to another switching mode of operation thereby preventing disturbing 'clicks' caused by the shorting of an amplifier input.

Noise suppression pushbutton interlocked switch assembly

A push-button actuated slide switch for a key board with noise suppression contacts arranged in the mounting area of the switch. These additional contacts are arranged perpendicular to the fixed contacts of the switch and bridged by a contact bridge which is indirectly actuated by the slider of the switch.

Push-button actuated slide 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.

Growing community of inventors

Berlin, Germany

Rudolf Schadow