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Control push-button device for switching an electronic or electric circuit

  • US 4,303,856 A
  • Filed: 01/25/1978
  • Issued: 12/01/1981
  • Est. Priority Date: 05/25/1977
  • Status: Expired due to Term
First Claim
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1. A push-button switch, comprising a casing provided with an opening, a push-button movable through said opening between a first and a second end positions in the casing, a plate of insulating material forming a wall of the casing and carrying at least one switching means adapted to pass from a first conduction state to a second conduction state when submitted to a magnetic field, at least an element of magnetic material secured to said casing, and at least a permanent magnet carried by said push-button for controlling the conduction state of the switching means when the push-button is in its second end position and for forming with said element of magnetic material magnetic return means for returning the push-button it its first end position.

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