Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1974-04-01
1976-11-23
Schroeder, Werner H.
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
52 63, 135DIG8, E04B 714
Patent
active
039930874
ABSTRACT:
A kinetic steel skeleton for a modular tension structure permitting the enclosure of the structure by means of a flexible roofing and siding skin or by a flexible sandwich. The kinetic steel skeleton described herein has the shape of a rectangular tent but is not necessarily restricted to this shape.
REFERENCES:
patent: 1481019 (1924-01-01), Luebbert
patent: 1958296 (1934-05-01), Crow
patent: 2666507 (1954-01-01), Ruark
patent: 2693195 (1954-11-01), Frieder et al.
patent: 2704522 (1955-03-01), Frieder et al.
patent: 3643391 (1972-02-01), Mollinger
Berman Conrad L.
Schroeder Werner H.
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