Control knob with multi-color indicator

Details Control knob with multi-color indicator Control knob with multi-color indicator

2007-04-17

2007-04-17

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Electric switch details

Indicators

Reexamination Certificate

active

11170594

ABSTRACT:
A control knob for controlling an underlying signal is disclosed. The control knob includes a clear radial portion which serves as an indicator on the knob. The radial portion receives light from a multi-color LED which is housed within a clear shaft of a potentiometer which rotates in concert with the control knob and controls the level of the underlying signal. The multi-color LED emits light of a color which is dependent upon the level of the underlying signal being controlled by the control knob.

REFERENCES:
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patent: 6624368 (2003-09-01), Sato et al.
patent: 6627829 (2003-09-01), Sato
patent: 6667446 (2003-12-01), Schuberth et al.
patent: 6744374 (2004-06-01), Kuenzner

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