Collapsible shelter

Tent – canopy – umbrella – or cane – Portable shelter – Framework

Reexamination Certificate

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Details

C135S128000, C135S157000, C052S018000, C052S083000, C052S079500

Reexamination Certificate

active

07874304

ABSTRACT:
A shelter of the type having collapsed and expanded configurations. In one of several example embodiments, the expanded configuration includes a tunnel-shaped portion forming a pair of opposing side walls and a roof section. The roof section has a peak positioned above the side walls and the tunnel-shaped portion may include opposing ends with a first opening at the first end and a second opening at the second end, each opening capable of accommodating an end wall. A first sheet is foldable along at least first and second crease lines to define the walls and roof section, the walls having an upper separation distance between the first and second crease lines when the shelter is expanded. The first sheet is segmented into panels with pairs of adjoining panels forming pleats each having a vertex extending from a crease line to an adjoining footing flap, the walls having a lower separation distance between footing flaps on different walls when the shelter is expanded. The lower separation distance is greater than the upper separation distance resulting in at least one of the walls being canted with respect to a vertical orientation.

REFERENCES:
patent: 3186524 (1965-06-01), Spaeth, Jr.
patent: 3346998 (1967-10-01), Nelson
patent: 3407546 (1968-10-01), Yates et al.
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patent: 3967023 (1976-06-01), Lysek
patent: 4120067 (1978-10-01), Hone et al.
patent: 4981732 (1991-01-01), Hoberman
patent: 5234727 (1993-08-01), Hoberman
patent: 6054194 (2000-04-01), Kane
patent: 6553725 (2003-04-01), Washington
patent: 6601598 (2003-08-01), Clee et al.
patent: 4003185 (1991-08-01), None

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