Card – picture – or sign exhibiting – Illuminated sign – Three-dimensional alphanumeric structure
Patent
1977-04-07
1979-02-20
Pitrelli, John F.
Card, picture, or sign exhibiting
Illuminated sign
Three-dimensional alphanumeric structure
40596, 40616, 40618, G09F 1308
Patent
active
041404050
ABSTRACT:
A sign letter structure for use in an illuminated sign and a composite extruded thermoplastic strip conforming to the periphery of a generally flat letter-form making up the sign, the extruded strip having parallel longitudinally extending spaced opaque sections with a transparent thermoplastic section therebetween, the perimetrical edging of the strip extending inwardly of the frame with the front surface of the edge in contact with the front surface of the letter-form, the transparent section having a convex outer surface and a ridged inner surface for picking up light rays and for diffusing such light rays after they have passed through the transparent section.
REFERENCES:
patent: 1081080 (1919-12-01), Wiley
patent: 1887748 (1932-11-01), Block
patent: 2623315 (1952-12-01), Owen et al.
patent: 2886911 (1959-05-01), Hardesty
patent: 3254436 (1966-06-01), Bank
patent: 3566525 (1971-03-01), Nassil et al.
Bank William
Shapiro Jay B.
Anchor Plastics Company Inc.
Pitrelli John F.
Skillington G. Lee
Smith Robert S.
Treacy David R.
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