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Extrusions are attached by interlocking dovetail joints along the length of the extrusions, with one section being deformable into a mating section of another.
English (United States)
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Flare Fastener for Extrusions
Extrusions are attached by interlocking dovetail joints along the length of the
extrusions, with one section being deformable into a mating section of another.
Fig. 1 shows an exemplary attachment of extrusions 10 and 11 through the
mating interface 12 shown in preassembly form in Fig. 2. Extrusion 10 has dual
channels 15 and 16 along its face and an extending nub 17 with inner faces 18
and 19, each of which is at the same angle relative to the horizontal as faces 22
and 23 on extrusion 11.
Fastening is obtained by pressing outwardly extending ridges 24 and 25 into
channels 15 and 16 to the extent that they are deformed as shown in Fig. 1. The
angle of faces 18, 19, 22 and 23 relative to horizontal, as shown in the drawings,
may be typically twenty degrees. By pressure conforming the interfaces as
shown, a permanent fastening with an inexpensive process is obtained including
the locational capability due to the dovetail characteristics of the extrusion.
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