Key board switch unit with illumination

Electricity: circuit makers and breakers – Electric switch details – Indicators

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

200159B, 200310, 200317, 362 31, H01H 918

Patent

active

043439756

ABSTRACT:
The invention provides a novel key board switch unit with illumination in the pushing areas, e.g. push buttons. Different from conventional ones, the pushing areas in the inventive unit are illuminated indirectly with the light emitted from a lamp positioned at a remote place not directly visible from above the pushing areas and, instead, an optical conductor member made of a transparent material is provided between the lamp and the pushing areas to be illuminated. The inventive key board switch unit can be very compactly designed despite the sufficiently high but not glaring intensity of illumination facilitating the operation of the switches even in a dark place.

REFERENCES:
patent: 2886911 (1959-05-01), Hardesty
patent: 3144643 (1964-08-01), Andersson
patent: 3619591 (1971-11-01), Korski
patent: 4022993 (1977-05-01), Shattuck
patent: 4060703 (1977-11-01), Everett
patent: 4163883 (1979-08-01), Boulanger
patent: 4247747 (1981-01-01), Swatten
patent: 4302648 (1981-11-01), Sado et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Key board switch unit with illumination does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Key board switch unit with illumination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Key board switch unit with illumination will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1532449

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.