Tent – canopy – umbrella – or cane – Umbrella – Collapsible in length
Patent
1994-10-12
1995-11-21
Mai, Lanna
Tent, canopy, umbrella, or cane
Umbrella
Collapsible in length
135 31, 135 37, A45B 1900
Patent
active
054677920
ABSTRACT:
A shortenable umbrella, essentially comprises a strut 2, a stay 3, a link 4, a rod 5, a tension wire 6, a tension link 7, a spoke 8, a rib 9, a first joint member J1 and a second joint member j2 connected each other as shown in FIG. 4 to form one rib assembly of the totally six or eight rib assemblies of a four sectioned shortenable umbrella, characterized by forming two spaced stops (A) and (B) integrally with the rod 5 at the lower edges thereof, disposing a guide ring (R) around the section of the rod 5 defined by the stops and passing the tension wire 6 beneath the groove of the rod 5 through the guide ring (R) to thereby permit the guide ring (R) moving freely along the rod under the action of the tension wire during the closing and opening operations of the umbrella.
REFERENCES:
patent: 4658844 (1987-04-01), Ping
patent: 4739783 (1988-04-01), Yang
patent: 4815489 (1989-03-01), Yang
patent: 5063953 (1991-11-01), Wu
patent: 5193565 (1993-03-01), Huang
patent: 5337770 (1994-08-01), Wang
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