Tent – canopy – umbrella – or cane – Portable shelter – Umbrella-type
Patent
1989-02-27
1992-02-25
Scherbel, David A.
Tent, canopy, umbrella, or cane
Portable shelter
Umbrella-type
135113, 135116, E04H 1528
Patent
active
050904353
DESCRIPTION:
BRIEF SUMMARY
The invention is relative to a folding shelter, such as a parasol, a market shelter, a camping shelter or similar, designed especially to protect a surface on the ground against bad weather, sun or rain. Its use is especially suitable for manufacturers of professional parasols or umbrellas.
Itinerant merchants have to protect in every season products and articles for sale while allowing open access for their customers. They must take precautions against the rain as well as the sun and the cover utilized in this sense must be able to be installed and disassembled rapidly, as such it must take up little space during transportation.
At the present time, two types of market shelters exist. First of all, one knows the productions which are related to the tent-type of construction. A rigid structure formed by an assembling of tubes serves as a support for an awning. The advantage of this structure is that it can be in large dimensions and that it offers good firmness. Dismounted, it takes up little room. On the other hand, its disadvantages are found at the level of the very high number of parts to put into play and the time for assembling and disassembling.
In light of the imperfections previously set forth, merchants are showing a trend more and more towards structures in umbrella form, as shown for instance in the document FR-A-2 539 600, which offer the advantage of being very convenient in their operation. The market shelters in umbrella form are made of a canvas roof supported by a retractable brace mounted on the extremity of a support pole which rests on the ground through the intermediary of a leg. Merchants only need to unfold the retractable brace in order to form an efficient roof which protects merchandise from the rain and the sun's rays.
Although decidedly more practical than the assembled tubular structure, the retractable brace nevertheless suffers from some defects. In particular, in order to maintain the vertical pole, one utilizes either a separate heavy base, or legs jointed with three or four branches. Yet, whatever the case may be, these legs or bases are always separated from the pole, as shown for instance in document FR-A-551 218.
In the case of the heavy base, the stability of the ensemble depends upon its weight, but that is reflected in the handling.
In the case of the separated jointed leg, it is necessary to open it in the manner of an inverted umbrella, then to fasten it in an open position and finally to get it to fit into the pole of the cover and to secure it with regard to the legs.
The transporting and putting together of this base or leg are hardly convenient. For example, when the canvas is wet after it rains, the ensemble gets heavier and the merchant has a lot of difficulty in maneuvering the pole, and in putting the leg in place.
In order to complete the stability of such covers, and to avoid deforming the structure during a strong wind, it is necessary to set up special devices, such as ballasting devices attached to the extremity of the ribs forming the structure.
More precisely, one utilizes either a rope or a rigid shroud that is tied on one side to the extremity of the rib and on the other side to the ballasts placed on the ground.
Thus, during the assembling or disassembling of the shelter, it is necessary to go and hook up or unhook respectively the ballasts. Similarly, during the stocking of the folded shelter, the shrouds are thus independent from the structure; or in the case of the ropes, these are rolled up on the extremities of the ribs.
One also knows through document U.S. Pat. No. 3,213,868, a shelter of the umbrella type involving a fold-out leg under the control of a hydraulic or screw jack, allowing the simultaneous handling of the legs and of the umbrella itself, but this construction is complicated, expensive and not automatic.
The principal objective of the present invention is to furnish a foldable shelter such as a parasol, market shelter, camping shelter or similar apparatus, of the retractable brace type which offers a great ease in installation.
REFERENCES:
patent: 617611 (1899-01-01), Strickland
patent: 620600 (1899-03-01), Mason
patent: 3213868 (1965-10-01), Forbes
patent: 3252469 (1966-05-01), Peake
patent: 4250906 (1981-02-01), Rivier et al.
patent: 4805654 (1989-02-01), Wang
patent: 4813442 (1989-03-01), Haines
patent: 4971090 (1990-11-01), Uhl
Mai Lan
Scherbel David A.
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