Patents by Inventor Rudolf Schadow

Rudolf Schadow has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrical snap-action switch
    Patent number: 4283609
    Abstract: 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.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: August 11, 1981
    Assignee: ITT Industries, Inc.
    Inventor: Rudolf Schadow
  • Noise suppression pushbutton interlocked switch assembly
    Patent number: 4152556
    Abstract: 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.
    Type: Grant
    Filed: August 11, 1977
    Date of Patent: May 1, 1979
    Assignee: ITT Industries, Inc.
    Inventor: Rudolf Schadow
  • Push-button actuated slide switch
    Patent number: 4144419
    Abstract: 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.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: March 13, 1979
    Assignee: ITT Industries, Inc.
    Inventor: Rudolf Schadow
  • Electrical snap-action switch
    Patent number: 4118609
    Abstract: 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.
    Type: Grant
    Filed: August 18, 1976
    Date of Patent: October 3, 1978
    Assignee: ITT Industries, Inc.
    Inventors: Rudolf Schadow, Klaus Hinze
  • Switch means for short-stroke push-button keys
    Patent number: 4046982
    Abstract: This invention relates to a switch means for push-button keys. The switch means comprises a roof shaped snap action spring element which is actuated by a push-button. The spring actuates a contact member which makes contact with electrical conductors on a printed circuit board.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: September 6, 1977
    Assignee: Rudolf Schadow, GmbH
    Inventors: Rudolf Schadow, Dieter Michalski