F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/10
F16B 13/02 (2006.01) A01G 17/18 (2006.01) B27K 3/02 (2006.01) B65D 39/08 (2006.01)
Patent
CA 2027427
ABSTRACT OF THE DISCLOSURE The present invention relates to a plastic plug for sealing wood preservative in holes drilled in wood structures. Wood plugs currently in use are difficult to remove and are generally not suitable for re-use. This makes it difficult to retreat existing holes with preservative. The plastic plug can either be driven or screwed into position. The plug is removed by unscrewing it. It can be removed for retreatment and can be re-used. The plug provides a consistant seal. A variation of the plug allows preservative to be inserted through the plug without its removal. A seal made of rubber or other flexible material is disposed within the interior of the plug. This seal has a pair of crossed slits. The construction is such that the seal will ordinarily prevent preservative from escaping through the interior of the plug but which will allow introduction of preservative by insertion of a probe which will spread apart the lips formed by the slits.
Bull Housser & Tupper Llp
Laidlaw William S.
LandOfFree
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