Collapsible umbrella

Details Collapsible umbrella Collapsible umbrella

A - Human Necessities

45

B

A45B 19/10 (2006.01) A45B 25/14 (2006.01)

Patent

CA 2471479

Collapsible umbrella having a resilient rib tensioning member connected to an end portion of the central shaft and interconnected with a first rib end portion and a second end portion. In response to moving forces against the rib connector it moves from a default position to a first, a second and a third open position to a second to a third. In the first open position, the rib tensioning member exerts a first threshold holding force on the second rib end portion, whereas in the second position, a second threshold holding force holds the second rib end portion, which is greater than the first. The rib tensioning member exerts a third threshold holding force on the second rib end portion, which is less than the second threshold holding force. The ribs having a rib weight sufficient to bias the second rib end portions towards a mounting surface.

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