Portable shelter

DETAILED DESCRIPTION Referring to the drawings, FIGS.
1, 2 and 3 show front, top and side views, respectively, of the completed structure of the invention made from elongated structural elements 2 connected at their ends to form a geodesic framework.
These structural elements 2 are in the preferred embodiments tubular steel or aluminum members flattened at their ends 3, as shown in FIGS.
5, 6 and 7, and drilled to produce holes 4 in the flattened ends.
In the embodiment of FIG.
5 flattened ends 3 are overlapped with the holes aligned and held together by a bolt 5 inserted through the holes and nut 6 tightly clamping the ends together.
Another form of connection is shown in FIG.
6 wherein short tubular links 7 having flattened ends span between the ends of adjacent structural members 2 and are connected thereto by a bolt and nut arrangement similar to that shown in FIG.
7.
An alternate type of connection shown in FIG.
8 can also be used.
In this form flattening of the ends of elements 2 can be eliminated and the ends are merely joined to a star-shaped connector made of angle iron, or similar structural material.
The angle material is cut to the required length for the legs 8 to provide adequate stability and the leg members are then cut at the inner ends at the required angle, to fit together as shown after which they are joined together by welding, for example, at their inner edges 9.
The ends of structural elements 2 are then fitted between the flanges of legs 8 as shown in FIG.
9 and can be attached thereto by bolts and nuts, (not shown) by inserting the bolts through aligned holes through the angle pieces and elements 2.
For a more permanent installation, elements 2 may be welded to angle members 8.
FIG.
10 shows a further type of connection for use in the invention where unflattened ends of elements 2 (round or square members) are sandwiched between two substantially conically-shaped plates or discs 10 as shown in FIG.
11, and rigidly connected thereto by a bolt 5' and nut 6' arrangement, the bolt being inserted through aligned holes in the connector discs and ends of elements 2