Tent – canopy – umbrella – or cane – Umbrella – Ribs and stretchers
Patent
1997-12-31
1999-08-03
Friedman, Carl D.
Tent, canopy, umbrella, or cane
Umbrella
Ribs and stretchers
135 251, 135 2532, 135 29, 135 32, A47B 1910
Patent
active
059311754
ABSTRACT:
An umbrella rib assembly includes: a top rib having a cross section of U shape and made of light material including aluminum alloy, an outer rib having a cross section of circular shape and made of composite or plastic materials having good resilience and mechanical strength to be connected at an outer end of the top rib, and a stretcher rib pivotally connected with the top rib, thereby providing an umbrella having light weight but having suitable resilience and strength.
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Chang Jung-Jen
Lin Chung-Kuang
A Phi Dieu Tran
Friedman Carl D.
Fu Tai Umbrella Works Ltd.
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