Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1976-09-02
1978-11-28
McCamish, Marion E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428164, 428167, 428172, 428913, B32B 328, B32B 330
Patent
active
041276930
ABSTRACT:
Structures are provided in lenticular display material such as used in application to automobile headlamp light and the like. The structures include molded, extruded or embossed plastic or glass which is formed with a plurality of irregular surface formations such as cavities, short or elongated protrusions defining irregular surface formations in or against which dirt or dust may collect and form light blocking material which substantially reduces the efficiency of the reflector or display. The new and improved structures provided herein include the provision of a coating or covering sheet of suitable transparent material which retains the interface defined by the irregular surface formations in the lens sheet or reflector so that it may properly continue to function substantially as intended.
REFERENCES:
patent: 2149171 (1939-02-01), Grote
patent: 2330097 (1943-09-01), Waters
patent: 2592882 (1952-04-01), Fisher et al.
patent: 2882413 (1959-04-01), Vingerhoets
patent: 2951419 (1960-09-01), Lemelson
patent: 3140340 (1964-07-01), Weber
patent: 3155764 (1964-11-01), Gill, Jr.
patent: 3661686 (1972-05-01), Armstrong
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