Tent – canopy – umbrella – or cane – Umbrella – Nonsymmetrical – axially offset – or inclined canopy
Patent
1997-08-01
1999-01-05
Mai, Lanna
Tent, canopy, umbrella, or cane
Umbrella
Nonsymmetrical, axially offset, or inclined canopy
135 31, A45B 1100
Patent
active
058552200
ABSTRACT:
A flattened folding umbrella, having two sets of terminal rib devices and four sets of side rib devices, each rib device comprising of inside main rib, middle main rib, outside main rib, branch rib, inside connecting rib, middle connecting rib, middle joint, and outside joint that are mutually joined together, wherein each set of terminal rib device is formed by compressing an appropriate location of the originally U-shaped groove of the branch rib to form a stop of narrow-opening groove to prevent the inside connecting rib that is joined to said branch rib from being accommodated in said branch rib, so that when the umbrella is folded, relatively the outside terminal of said inside connecting rib and its connected middle joint are inclining slightly outwardly; besides, the outside terminal of said inside connecting rib is also designed to have a larger outward inclining obtuse angle, or an appropriate location of the U-shaped groove of the middle main rib is compressed to form a stop of narrow-opening groove, so that when the umbrella is folded, it will prevent the inside main rib from being accommodated into said middle main rib, and that relatively, the outside terminal of said middle main rib and its connected outside joint are inclining slightly outwardly; therefore, it reduces the installation thickness of the terminal joining component; and that when the umbrella is folded, it naturally forms the configuration that the outside joint of each side rib device is located on the inside, and the outside joint of each terminal rib device is naturally located at the outside, to become a more narrowed and flattened shape.
REFERENCES:
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patent: 1405911 (1922-02-01), Fretz, Sr.
patent: 1417491 (1922-05-01), Brandt
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patent: 4658844 (1987-04-01), Ping
patent: 5337770 (1994-08-01), Wang
patent: 5533535 (1996-07-01), Lin et al.
patent: 5615697 (1997-04-01), Lin et al.
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