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Touch sensitive actuator having a uniform actuation force and a maximum active area

  • US 20080309169A1
  • Filed: 08/27/2008
  • Published: 12/18/2008
  • Est. Priority Date: 06/20/2006
  • Status: Active Grant
First Claim
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1. A user interface for a load control device, the user interface being adapted to be positioned in an opening of a faceplate, the user interface comprising:

  • a touch sensitive front surface and adapted to be provided in the opening of the faceplate; and

    a touch sensitive device, responsive to a point actuation on the touch sensitive front surface, the point actuation comprising characteristics of a position and a force, the touch sensitive device having an output for providing a control signal representative of the position of the point actuation;

    wherein the touch sensitive device defines a first area and the touch sensitive front surface defines a second area, the first area of the touch sensitive device being larger than the second area of the touch sensitive front surface, the touch sensitive device and touch sensitive front surface being positioned such that an orthogonal projection of the second area of the touch sensitive front surface onto the first area of the touch sensitive device is encompassed by the first area.

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