Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1977-04-12
1978-04-25
Schroeder, Werner H.
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
5 99C, 40610, 46 12, 46 21, 119 19, 182153, 312244, 312258, 312263, A45F 116
Patent
active
040857620
ABSTRACT:
A folding, rigid tent-like structure useful for a variety of play purposes can be constructed so as to utilize a pair of sides. These sides have top edges which are preferably connected by a connector and appropriate hinges so that the sides may be pivoted relative to one another. A pair of bottom walls are located between these sides adjacent to the bottom edges of these sides. The bottom walls have pivotally connecting adjacent edges and side edges which are pivotally connected to the sides. At least one folding link structure is secured to the sides beneath the bottom wall. This folding link structure serves to support the bottom walls against sagging. The tent-like structure may be folded to a flat position by concurrently folding the link structure between the sides and folding the bottom walls so that they are adjacent to one another between the sides as the sides themselves are pivoted so as to be adjacent to one another.
REFERENCES:
patent: 25039 (1859-08-01), Parkhurst
patent: 109166 (1870-11-01), Achenbach
patent: 1007956 (1911-11-01), Maurer
patent: 1107871 (1914-08-01), Alkire et al.
patent: 1284624 (1918-11-01), Ehrenberg
patent: 1446296 (1923-02-01), Irvin
patent: 1556624 (1925-10-01), Pavenick
patent: 2043072 (1936-06-01), Schmitt et al.
patent: 2173639 (1939-09-01), Swanson
patent: 2650375 (1953-09-01), Serrell
patent: 2702727 (1955-02-01), Sweet
patent: 3807104 (1974-04-01), Webster
O'Brian Edward D.
Plachy William M.
Berman Conrad L.
O'Brian Edward D.
Schroeder Werner H.
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