The present invention relates generally to field of canopies, such as tent canopies and umbrella canopies, which are used for protection from precipitation and/or sun. More particularly, the present invention relates to canopies designed to withstand the force of winds.
Canopies, typically comprising sheets of impermeable fabric or plastic, are widely used in various applications to shield people and/or objects from precipitation and/or sun. Common applications of such canopies occur in tents and umbrellas.
Unless such canopies are provided with vents, they are apt to be blown away, collapsed or inverted by gusts of wind. The problem with vents, however, is that they allow precipitation as well as wind to pass through the canopy.
Various solutions to this problem have been attempted as applied to umbrella canopies. All of these attempted solutions involve the use of multiple tiered canopies, usually with a smaller upper canopy covering the vent holes around the top of a larger lower canopy. Beach umbrellas, for example, typically incorporate this design. But, because the vented area in the lower canopy must be localized in this design, its effectiveness in withstanding winds from various directions is limited.
Other multi-tier designs adapted to rain umbrellas involve venting in both the upper and lower canopies, with the venting offset so that falling rain cannot pass directly through both layers. But, because the vent holes in the lower canopy are unobstructed, raindrops dripping along the lower canopy can still find their way into these vent holes and drip onto the person holding the umbrella. Also, because these designs lack a structure for maintaining a spaced relation between the upper and lower canopies, wind is apt to get trapped between them, causing disruption and/or damage to the canopies.
The present invention addresses these as yet unresolved problems by providing a dual canopy structure with offset venting in both upper and lower canopies and with inter-canopy suspension structures, which keep the upper and lower vents properly aligned and block the perimeter of the lower vents, so that rain cannot drip through these vents onto protected persons and/or objects. These inter-canopy suspension structures are comprised of elements which are themselves vented, allowing wind that would otherwise get trapped between the canopy layers to escape.
The present invention comprises a wind-proof dual canopy system, comprising an upper canopy and a lower canopy. Both canopies have a pattern of vent holes, which are uniformly distributed across the entire canopy area from the center to the perimeter. Such widespread distribution of vent holes enables the pattern of vent holes to effectively intercept wind from any direction, including updrafts as well as downdrafts.
The respective patterns of the upper and lower canopy vent holes are configured so that the vent holes of the upper canopy are perpendicularly aligned with unvented sections of the lower canopy, and the vent holes of the lower canopy are perpendicularly aligned with unvented sections of the upper canopy. Maintaining this offset relationship of the upper and lower vent holes are multiple composite suspension structures, each of which comprises a smaller annular inner suspension element that nests within a larger annular outer suspension element.
The inner and outer suspension elements each have a coronal shape, comprising a circlet of tapered projections, similar in shape to a crown or coronet worn by royalty/nobility. As best seen in
The foregoing summarizes the general design features of the present invention. In the following sections, specific embodiments of the present invention will be described in some detail. These specific embodiments are intended to demonstrate the feasibility of implementing the present invention in accordance with the general design features discussed above. Therefore, the detailed descriptions of these embodiments are offered for illustrative and exemplary purposes only, and they are not intended to limit the scope either of the foregoing summary description or of the claims which follow.
Referring to
As best seen in
As best seen in
The outer suspension element 108 comprises a tubular or annular-frusto-conical band 110, surmounting multiple, uniformly spaced, tapered outer projections 111, which are separated by multiple, intervening, arcuate-concave, first coronal vent indents 112. The inner suspension element 109 comprises a tubular or annular-frusto-conical base 113, surmounted by multiple, uniformly spaced, tapered inner projections 114, which are separated by multiple, intervening, arcuate-concave, second coronal vent indents 115.
As best seen in
As best seen in
In the preferred embodiments, the number of outer projections 111 and inner projections 114—and the corresponding number of first coronal vent indents 112 and second coronal vent indents 115—is determined by the “vent group number,” which is the number of upper canopy vent holes 103 comprising an upper canopy vent hole group 105. For example, as best seen in
In the second embodiment of the present invention 200, depicted in
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In the third embodiment of the present invention 300, depicted in
As used in the claims which follow, the terms “up” and “above” refer to the direction of the upper canopy 101, while the terms “down” and “below” refer to the direction of the lower canopy 102.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that many additions, modifications and substitutions are possible, without departing from the scope and spirit of the present invention as defined by the accompanying claims.
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