Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Reexamination Certificate
2000-11-09
2002-07-09
Friedman, Carl D. (Department: 3635)
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
C135S020300, C135S024000, C135S025100, C135S028000
Reexamination Certificate
active
06415805
ABSTRACT:
BACKGROUND OF THE INVENTION
Prior art collapsible umbrellas mainly use a spring disposed inside the umbrella rod to provide urging forces to ap lunger in the umbrella rod. The plunger drives a rope, which is attached thereto, to move to preset positions to complete a closing or opening operation. Although existing designs can achieve an automatic opening and closing effect, they are complicated in structure and often malfunction because a large portion of the rope moves in the interior of the umbrella rod. Furthermore, due to the insufficient length of rope, it also often leads to a partial opening or closing of the umbrella. It is desirable to have improvements made on such a prior art closing mechanism.
SUMMARY OF THE INVENTION
In view of the above problems, the primary object of the invention is to provide an innovative closing mechanism used for a quadruple folding collapsible umbrella. According to the invention, the length of the rope is increased and a large portion of the rope is disposed outside the umbrella rod. Thus it can overcome the shortcomings of a prior art means and enhance the performance of a collapsible umbrella. Now the structure and features of het invention will be described in detail with reference to the accompanying drawings.
REFERENCES:
patent: 2782795 (1957-02-01), Small
patent: 5029596 (1991-07-01), Tung
patent: 5267583 (1993-12-01), Wu
patent: 5390686 (1995-02-01), Lin et al.
patent: 5441065 (1995-08-01), Lin et al.
patent: 6016822 (2000-01-01), Lin et al.
patent: 6129101 (2000-10-01), Dubinsky
patent: 6173721 (2001-01-01), Mery
patent: 628264 (1994-12-01), None
Friedman Carl D.
Rosenberg , Klein & Lee
Yip Winnie
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