Hub assembly for collapsible structures

Details Hub assembly for collapsible structures Hub assembly for collapsible structures

1979-06-19

1981-07-28

Bell, J. Karl

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 20R, 135 26, A45F 116, A45B 1900

Patent

active

042805210

ABSTRACT:
A collapsible structural assembly is provided with a plurality of inner and outer hubs pivotally and collapsibly joining the ends of tubular elements making up the structural assembly. Each hub assembly includes a pair of joined hub bodies holding a retaining ring captive therebetween and the hub bodies are slotted to expose sections of the ring. The tubular elements are provided end plugs having slots receiving the ends of connector blades, the opposite ends of which are received in the slots of the hub bodies and are pierced by the ring. The tubular elements are crimped to lock the end plugs and connector blades to them.

REFERENCES:
patent: 1849794 (1932-03-01), Ericson
patent: 2306706 (1942-12-01), Lucas
patent: 2561435 (1951-07-01), Woodward
patent: 2571634 (1951-10-01), Von Gunten
patent: 2830835 (1958-04-01), Woodruff
patent: 3217723 (1965-11-01), Suchy
patent: 3424180 (1969-01-01), Andolfi
patent: 3613702 (1971-10-01), Weber
patent: 3638668 (1972-02-01), Kida
patent: 3692035 (1972-09-01), Houston
patent: 3968808 (1976-07-01), Zeigler
patent: 4026313 (1977-05-01), Zeigler

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