Tent – canopy – umbrella – or cane – Umbrella – Suspended
Reexamination Certificate
2001-03-13
2003-09-16
Mai, Lanna (Department: 3637)
Tent, canopy, umbrella, or cane
Umbrella
Suspended
C135S020300
Reexamination Certificate
active
06619306
ABSTRACT:
FIELD OF THE INVENTION
The present invention generally relates to a large-sized parasol having a canopy sideways supported by a post, and in particular to a device for controlling canopy opening/closing of the large-sized parasol.
BACKGROUND OF THE INVENTION
Umbrellas and parasols are commonly used in shielding people in sunny and rainy areas. A common structure of umbrellas and parasols includes a central post along which a runner is movably mounted. A crown is attached to a top end of the central post. Ribs extend from the crown for supporting a canopy. Stretchers extend from the runner and pivoted to the ribs whereby by moving the runner along the central post, the ribs are caused to move toward/away from the central post and thus opening/closing the canopy.
Such a structure works well for small-sized umbrellas. However, for large-sized parasols which is generally for shielding sun light, the central post stands for a problem in efficient use of the space under the canopy. Thus large-sized parasols with sideways support canopy are available in the market. A mechanism to open the canopy of such large-sized parasols includes a rope which drives the canopy between an open position and a closed position. The mechanism, however, requires a complicated and thus expensive structure.
It is thus desirable to provide a parasol opening device having a simple and thus cheap structure for overcoming the above problem.
SUMMARY OF THE INVENTION
Accordingly, an object of the present invention is to provide a parasol opening device having a simple structure.
Another object of the present invention is to provide a parasol opening device that is easy to operate.
To achieve the above objects, in accordance with the present invention, there is provided a parasol opening device adapted to be incorporated in a parasol, wherein the parasol comprising a tubular post for movably receiving the parasol opening device therein, the parasol opening device being movable along the post between a first position and a second position, an arm having a first end pivotally attached to the parasol opening device and a second end to which a canopy system is pivoted, a link having a first end pivoted to the post and a second end pivotally attached to a slide which is movable along the arm and a rope having a predetermined and fixed length, the rope partially extending through the post, the parasol opening device and the arm with a first end of the rope fixed to the post and a second end of the rope attached to a runner of the canopy system whereby driving the rope causes the canopy system to open/close, the parasol opening device comprising a movement control device for guiding/controlling the parasol opening device to move along the post between the open position and the closed position and thus driving the rope to open/close the canopy system.
REFERENCES:
patent: 5735302 (1998-04-01), Saliva
patent: 5937882 (1999-08-01), Harbaugh
patent: 5960806 (1999-10-01), Steiner
patent: 6014980 (2000-01-01), Glatz
patent: 6196242 (2001-03-01), Xu
patent: 6230727 (2001-05-01), Chen
patent: 6321763 (2001-11-01), Ma
patent: 2266234 (1993-10-01), None
Mai Lanna
Rosenberg , Klein & Lee
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