Tent – canopy – umbrella – or cane – Portable shelter – Framework
Patent
1997-04-04
1999-09-14
Canfield, Robert
Tent, canopy, umbrella, or cane
Portable shelter
Framework
52 86, 135906, 135124, 135126, 135136, 135138, E04H 1540, E04B 132
Patent
active
059506490
DESCRIPTION:
BRIEF SUMMARY
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to an arch arrangement and to protective roofs.
Due to the reduction of the atmospheric ozone layer, the ultraviolet proportion of sun radiation increases which reaches the earth's surface. This results in an increased risk of skin damages that should be diminished by appropriate protective measures, particularly for children playing outside. Apart from wearing garments, the use of protective agents against the sun is recommended. These two measures are, however, not optimally efficient, particularly when bathing. Garments which cover a wide portion of the body are inappropriate due to the contact with water, while protective agents against the sun are washed off at least in part. In order to keep at least the direct sun rays off, sun-shades could be used.
However, sun-shades have the drawback that these mostly need a central, but optionally laterally arranged, support piece which has to be either put into the soil, or has to be held in a weight or cantilever member. A central arrangement of the support piece restricts the shady playing region considerably in an undesired manner. To put it into the soil is not possible, for example, with a stony underground, and carrying a weight or cantilever member would unnecessarily increase the load to be brought along to bathing.
Arrangements are known, for example, from the field of igloo tents wherein tube-shaped rods are braced curvilinearly by the tent-bottom or by tension chords that hold the rod ends. By using, for example, two arch portions extending transversely to each other interconnected via the tent-roof, a roof supporting arrangement is created which can be constructed without fastening or bracing to the soil, i.e. in an unsupported manner, when the stability requirements are small.
Such a tent-like protective roof, however, has the disadvantage that tension chords or a tent-bottom will affect in the shady area any undisturbed playing on a natural soil. A child would repeatedly fall over bracing chords, and in the case of use of a bottom layer, apart from obstruction by its rim, any contact with natural soil would be prevented which does not make sense especially on a sandy beach. Furthermore, a tent roof, with exception of the entrance area, will extend down to the bottom so that the shady playing space would be shut to the exterior, and free playing as well as perception of the surroundings would be very much restricted.
SUMMARY OF THE INVENTION
Now, the object of the invention consists in devising an unsupported shady arrangement leaving a central bottom area completely free and needing neither a fastening device to the soil nor a heavy and cumbersome weight or cantilever member. For the case of use in various leisure time activities, the arrangement should be detachable and lightweight.
In a first step according to the invention, it has been recognized that at least one braceable, unsupported arch element or an arch arrangement would be necessary for the shady arrangement whose two arch ends can stand on the soil, unsupportedly spanning over the area situated in-between. To this end, the arch element comprises at least one arch portion, particularly a rod to be bent, and a bracing portion, preferably a bracing chord interconnecting the two ends of the arch portion, as well as at least one sheet-like connecting portion or a connecting surface that connects the bracing portion to the arch portion at least in a partial area between the two ends of the arch portion.
By connecting the bracing and the arch portion the result will be obtained that the bracing portion does not extend along a direct connecting line between the ends of the arch portion, but extends in a curved manner at the same side as the arch portion. In a preferred embodiment, the arch portion and the bracing portion are parabolic, the curvature of the arch portion being, in particular greater than that of the bracing portion. Depending on the length of the arch portion and of the bracing portion as well as on the construction
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Canfield Robert
Farber Martin A.
Gerig Grafik Design
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