Collapsible rod and joint structure forming a tetrahedral or sim

Details Collapsible rod and joint structure forming a tetrahedral or sim Collapsible rod and joint structure forming a tetrahedral or sim

1976-08-18

1978-01-24

Faw, Jr., Price C.

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

52648, 52DIG10, 135 15PQ, 403172, A45F 116

Patent

active

040698327

ABSTRACT:
A collapsible rod and joint structure forming a polyhedron frame comprising sleeve or sleeve-type open sleeve joints cooperating with corner connection joints at the ends of each arm of the structure. The folding of a polyhedron is accomplished when all of the horizontal base arms joining the vertical arms radiating from the apex joints are each folded on hinged corner joints at the base of each vertical arm to connect to, after disengaging from the corner connection joint on the adjacent vertical arm, are folded so that the arms rest in parallel and together, whereby all dual sets are folded toward each other so that all arms rest in parallel and together.

REFERENCES:
patent: 690102 (1901-12-01), Dummer
patent: 1081902 (1913-12-01), Fowzer
patent: 1092217 (1914-04-01), Hopkins
patent: 2810390 (1957-10-01), Wallace
patent: 2982379 (1961-05-01), Fisher
patent: 3521421 (1970-07-01), Schroeder
patent: 3927489 (1975-12-01), Bernstein

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