Displayboards

Details Displayboards Displayboards

1989-01-09

1990-10-02

Apley, Richard J.

Education and demonstration

Means for demonstrating apparatus, product, or surface...

Display panel, chart, or graph

434365, G09B 106

Patent

active

049603833

ABSTRACT:
A displayboard comprises sheets with a plastics foam core formed in situ between them. Edging strips having internal channels in which the edges of the board lie are mechanically connected directly to the sheets either by tongues that project out of the sheets into recesses in the sides of the channels or by the pressure of the foam core when being formed forcing parts of the sheets into the recesses. The edging strips have external channels serving auxiliary functions, e.g. securing the displayboard to wall brackets, securing a hinge joining a second displayboard, securing a pencil tray and carrying a pelmet containing a spring-loaded clamp for clamping papers against the edging strip.

REFERENCES:
patent: 3608221 (1969-09-01), Harris
patent: 3812600 (1974-05-01), Rondello
patent: 3842347 (1969-12-01), Reibold
patent: 4040194 (1977-08-01), Penton et al.
patent: 4527347 (1985-07-01), Ohlson
patent: 4654101 (1987-03-01), Kane
patent: 4669210 (1987-06-01), Van Erum

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