Patent ID: 6092902
Filing Date: 2000-07-25
Classification: G05G,H01H

Abstract:
A control knurl for actuating an electrical appliance which includes at least one zone at a lateral periphery of the knurl for illumination from the interior of the knurl by means of a light guide, wherein light beams are introduced into the light guide in an area of an axis of the knurl, characterized in thatthe light guide is generally coated with a bright, protective coating with the exception of a surface that is used to introduce the light beams; andwherein the light guide includes first, second and third portions, the first portion arranged centrally to a longitudinal axis, and being substantially annular, the second portion having a shape of a truncated hollow cone for reflecting light beams extends in an axial direction, the third portion having a shape of a circular ring positioned adjacent to the truncated cone, and said light beams enter into the first portion in an longitudinal direction of said longitudinal axis to said third portion.