F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
43/112, 43/67, 1
F16L 55/00 (2006.01) E03F 7/06 (2006.01)
Patent
CA 1313827
Abstract For the purpose of preventing rodents, such as rats, entering dwelling houses and like buildings through the sewage pipes of such buildings a rodent barrier is installed in a sewage pipe. The barrier comprises a frame structure which is anchored in a pipe join and from which there extends a wire cone, which tapers in the direction of sewage flow. The apex angle of the cone will vary with varying pipe diameters and the wires or rods forming the cone will also vary in length and in gauge accordingly.
596385
G. Ronald Bell & Associates
Gustavsberg Industri Aktiebolag
Ling Rolf
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