Umbrella

Details Umbrella Umbrella

2011-03-29

2011-03-29

Dunn, David (Department: 3636)

Tent, canopy, umbrella, or cane

Umbrella

Cover or lining feature

C135S033200, C135S031000, C135S033410

Reexamination Certificate

active

07913709

ABSTRACT:
An umbrella (1) in which the canopy is supported, tensioned and retained on a frame without any external points. The ends of conventional ribs (6,7) are provided with force spreading components (8) which are located within pockets (9) at the periphery of the umbrella canopy (3). As the umbrella is erected, the force spreading components open to provide a surface which pushes outwardly against a bearing surface formed between a pocket and the canopy, which “spread” outwards. The spreading of the components (8) is initiated by the radially outward movement of slidable tubes (7) upon inner rods (6) attached at their inner ends to the shaft (2) of the umbrella. Inner rods (6) and outer tubes (7) together form the ribs or spokes of the umbrella which are supported and raised/lowered by primary struts (11) connected between the ribs and a primary shaft slider (12). Outward sliding movement of the outer tubes (7) over the inner rods (6) is assisted by secondary struts (13) which connect a secondary shaft slider (14) (positioned between the primary shaft slider (12) and the canopy end of the shaft) and a respective primary strut (11).

REFERENCES:
patent: 2047711 (1936-07-01), Siers
patent: 2185587 (1940-01-01), Carlisle
patent: 3513863 (1970-05-01), Weber
patent: 4030515 (1977-06-01), Weber
patent: 4259974 (1981-04-01), de Polo
patent: 4474201 (1984-10-01), Kida
patent: 4638827 (1987-01-01), DeMarco
patent: 4711260 (1987-12-01), Wiens et al.
patent: 5595202 (1997-01-01), Scaccia
patent: 5694958 (1997-12-01), Chang
patent: 6401737 (2002-06-01), Kloor, III
patent: 20215089 (2002-12-01), None
patent: 86305309.6 (1988-01-01), None
patent: 2344286 (2000-06-01), None
patent: 58022003 (1983-02-01), None
patent: 58163306 (1983-09-01), None
patent: 252610 (1990-04-01), None
patent: 9065916 (1997-03-01), None
patent: 6810620 (1969-01-01), None
patent: 335082 (1997-10-01), None
patent: WO 00/76356 (2000-12-01), None

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