Illinois Tool Works Inc.

James J MacDonald, Jr

Eric K Larson

Juan J Barrena

Mark A Romo

Andy W Tucker

A shaft of a rotary switch, for example, useful as a control for an appliance, such as a washing machine, incorporates an LED at the end of the shaft and projecting light laterally from the shaft to provide an indication of the rotary position of the corresponding knob with respect to printed indicia on a console. The LED may be powered by slip rings incorporated into the rotary switch and communicating directly with line power as controlled by the limiting resistor and the shaft may include a controlled breakage feature providing LED conductors that are recessed within the shaft in the event of shaft breakage to reduce the chance of operator contact with line voltage.

Growing community of inventors

Dedham, MA, United States of America

James J MacDonald, Jr