Theatrical risers

Details Theatrical risers Theatrical risers

1983-08-17

1986-03-25

Hafer, Robert A.

Undertaking

A63J 500

Patent

active

045778566

ABSTRACT:
A theatrical riser comprises a triangular top panel supported on a base which is formed of three vertical rectangular panels. The rectangular panels are interconnected at the corners of the base by projections which are integral with a panel and extend through a slot on the adjacent panel. The projections have upturned or downturned portions which extend over the exterior surface of the adjacent panel to prevent horizontal withdrawal of the projections from the slots. A kit for forming such risers is also disclosed.

REFERENCES:
patent: 1952817 (1934-03-01), Neary
patent: 2366677 (1944-01-01), Rosenthal
patent: 2575593 (1951-11-01), Peery
patent: 2657964 (1953-11-01), Watrous
patent: 2704383 (1955-03-01), Berg
patent: 3327882 (1967-06-01), Andrews
patent: 3346317 (1967-10-01), Peggs
patent: 3512857 (1970-05-01), Butera
patent: 3564790 (1971-02-01), Rehfeld
patent: 3692201 (1972-09-01), Garduna
patent: 4003167 (1977-01-01), Saunders
2 page advertisement Encore Staging.

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