Patent ID: 8350484
Filing Date: 2013-01-08
Classification: H05B

Abstract:
1. A push-button switch comprised of two loosely nested hollow cylinders where the moveable inner cylinder supports a concentrically attached cylindrical push-button, a passive backlighted display viewable through a transparent faceplate of the push-button, a permanent magnet, and a coil for induction-coupled power for the display backlighting; and where the stationary outer cylinder supports an oscillator circuit and coils to inductively couple power to the inner cylinder, a Hall-effect switch activated by the magnet in the inner cylinder when the push-button is depressed, and a permanent magnet to provide a restoring force for when the push-button is released, wherein the outer cylinder supports a printed circuit board containing the Hall-effect switch connected to a bi-stable latch circuit arranged to provide alternate-action switching at each push-button depression and where the bi-stable latch circuit is connected to an input/output pin of a connector.