Buckles – buttons – clasps – etc.
Patent
1975-05-02
1977-03-29
Moses, Richard L.
Buckles, buttons, clasps, etc.
240 411, 240103R, F21V 700
Patent
active
040151131
ABSTRACT:
Apparatus for varying the intensity without changing the color quality of light derived from an artificial light source includes an arcuate row of pivotally mounted cylinders. Each cylinder has at least two surface areas of different reflectivity so that orientation of each cylinder provides a selectively variable composite reflectivity for all cylinders.
REFERENCES:
patent: 1493426 (1924-05-01), Bowman
patent: 1604520 (1926-10-01), Kleese
patent: 1725117 (1929-08-01), Walthers
patent: 3382353 (1968-05-01), Wappler
patent: 3775606 (1973-11-01), Bazell et al.
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