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Instrument with illuminated control knob

  • US 7,105,759 B1
  • Filed: 06/28/2005
  • Issued: 09/12/2006
  • Est. Priority Date: 06/28/2005
  • Status: Expired due to Fees
First Claim
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1. A knob for an electronic instrument having a rotary switch with an extending shaft, and a light source proximate to the shaft, the knob comprising:

  • a body having a rear face, an opposed front face, and side surfaces extending between the faces;

    the rear face defining a bore sized to receive a free end of the shaft;

    the body having a light-transmissive portion extending from a first surface portion of the rear face surrounding the bore, such that light from the light source enters the light transmissive portion regardless of the rotary position of the knob; and

    the light-transmissive portion of the body extending to at least a first window portion of at least one of the side surfaces and the front face.

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