Plug with inner and outer drum

Details Plug with inner and outer drum Plug with inner and outer drum

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 13/00 (2006.01) E04B 1/48 (2006.01) E21D 21/00 (2006.01)

Patent

CA 2337487

The present invention relates to a plug which can be put into holes, es- pecially into drilled bore holes of walls, which plug effects a surprising solid tightening for example in lay brick-walls also in such cases in which the hole or the plug has at least partly sizes and especially varying di- ameter-dimensions, which do not allow the use of the so-called spread- plugs known in the prior art. The plug according to this invention is con- sisting in an inner drum preferably in the shape of a pyramid-stump made out of a hard material and in a outer drum made out of extendable mate- rial, whereby the outer drum is connected with the inner drum for exam- ple by welding.

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