Wireless umbrella frame

Details Wireless umbrella frame Wireless umbrella frame

1978-12-22

1983-01-18

Bell, J. Karl

Tent, canopy, umbrella, or cane

Umbrella

Inflatable

135 28, A45B 2502

Patent

active

043687490

ABSTRACT:
An umbrella frame having an upper mounting member (11) fixed on the upper end of a central shaft (10) and a lower mounting member (12) slidable on said shaft with a circumferential series of outer ribs (13) pivoted at the upper end to the upper mounting member (11), and stretcher rods (16) pivotally connecting intermediate portions of said ribs (13) to said lower mounting member (12). The pivotal connections between the mounting members (11) and (12) and the ribs (13) and rods (16) are locked in place by retainer plates (25) and (25a) respectively, movable on the shaft (10).

REFERENCES:
patent: 2101510 (1937-12-01), Rathbun
patent: 2321495 (1943-06-01), Levin
patent: 3424180 (1969-01-01), Andolfi

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