Bargraph light guide

Details Bargraph light guide Bargraph light guide

1979-03-15

1981-01-13

Yasich, Daniel M.

Signals and indicators

Indicators

Visual light signal

40573, 116272, 116DIG5, 116304, 362 32, 350 961, G01D 1128, G09F 0900

Patent

active

042443172

ABSTRACT:
Present parameter value indicators are wasteful of space and expense and have parallax error if viewed at an angle. This invention is a vertical strip bargraph comprising separately illuminated squares of different colors to indicate values of the parameter without parallax error and economical of space and expense.

REFERENCES:
patent: 2520758 (1950-08-01), Crownover
patent: 2909857 (1959-10-01), Wilson
patent: 2998597 (1961-08-01), Edwards
patent: 3451681 (1969-06-01), Rossetti
patent: 3648044 (1972-03-01), Bernard et al.
patent: 3712705 (1973-01-01), Marcatili
patent: 3758973 (1973-09-01), Miller
patent: 3779629 (1973-12-01), Green
patent: 3809877 (1974-05-01), Kwong
patent: 3901674 (1975-08-01), Strack et al.
patent: 3902879 (1975-09-01), Siegmund
patent: 4006546 (1977-02-01), Anderson et al.
patent: 4023887 (1977-05-01), Speers
patent: 4128298 (1978-12-01), McMillan

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