Card – picture – or sign exhibiting – Display card – Having a curved display panel
Patent
1986-08-12
1988-04-19
Wilson, John J.
Card, picture, or sign exhibiting
Display card
Having a curved display panel
403402, G09F 112
Patent
active
047380390
ABSTRACT:
A polygonal frame comprising a plurality of framing pieces and the same number of assembly devices. Both ends of each framing piece are slanted so as to fit together with matching slanted framing pieces. The rear side of each framing piece is set with an oblong recess and a longitudinal slot on an appropriate position proximate to each end thereof. Each assembly device comprises: an L-shaped assembly plate which consists of an L-shaped plate portion, two inclined supporting blocks disposed under opposite sides of the plate portion, and an L-shaped supporting rail with each of its two ends connecting to the two opposite supporting blocks; two inclined fastening blocks, each having a lengthwise groove on its lower central portion and a threaded vertical hole to enable a screw to go through; and two screws for engaging with the fastening blocks. An assembly device is put into the recesses and slots set on each two abutting framing pieces, thereby assembling them together by transverse fastening force which is produced by the rising of fastening blocks against the framing pieces when each screw engaged with the fastening block is advanced.
REFERENCES:
patent: 2581843 (1952-01-01), Edwards
patent: 4368584 (1983-01-01), Logan
patent: 4428135 (1984-01-01), Sobel
patent: 4438578 (1984-03-01), Logan
patent: 4493583 (1985-01-01), Wallace
patent: 4538936 (1985-09-01), Zeidl
Chiang Yung C.
Sun James
Hakomaki J.
Wilson John J.
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