Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1979-08-30
1980-12-30
Bell, J. Karl
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
135 4C, 52 71, E04B 1343
Patent
active
042417457
ABSTRACT:
The shelter is produced of a semi-rigid foldable material and can be rolled up into a compact configuration which is easy to carry. In its erect configuration, the shelter includes a generally conically shaped top covering which is connected to a triangular base. Connected to the base is a partial flooring which extends between two corners of the triangle. The occupant enters below the covering through the open floor section and places his weight on the enclosed floor section. This holds the three corners of the triangle downwardly thus causing the covering of the shelter to maintain its vertical disposition. The weight of the occupant causes the shelter to maintain a conical shape. Internal stake loops are attached at each end of the opening in the floor to allow adjustment of the shelter ground contact to seal the opening.
REFERENCES:
patent: 2835931 (1958-05-01), Sterkin
patent: 3738023 (1973-06-01), Sajkovic
patent: 3759277 (1973-09-01), Glade
patent: 3785066 (1974-01-01), Juitt
patent: 3807104 (1974-04-01), Webster
patent: 4064662 (1977-12-01), O'Toole
patent: 4133149 (1979-01-01), Angress
patent: 4145850 (1979-03-01), Runyon
Bell J. Karl
Jacobson Harvey B.
O#Brien Clarence A.
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