公开(公告)号：US09607792B2

公开(公告)日：2017-03-28

申请号：US14575438

申请日：2014-12-18

Applicant: Whirlpool Corporation

Inventor： Matthew P. Ebrom ,  Neomar Giacomini ,  Eric J. Schuh ,  Miguel F. Thimann

IPC: H01H9/18 ,  G05G1/10 ,  H01H19/02 ,  H01H19/60

CPC classification number: H01H19/025 ,  F21V23/003 ,  F21Y2113/10 ,  F21Y2115/10 ,  G02B6/0001 ,  H01H19/60 ,  H05B33/0854

Abstract: A knob assembly includes a repositionable knob having an interior framework and a light-transmissive indicia, at least one light source for projecting light into the knob to back-illuminate the indicia, a position sensor for providing an output dependent on the position of the knob, and a controller receiving the output from the sensor and controlling the intensity of the at least one light source to compensate for any light blocked by the interior framework, and maintain a substantially uniform illumination of the light-transmissive indicia so that it is viewable from the exterior of the knob.