F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
F16L 58/06 (2006.01) B05C 7/04 (2006.01) B05C 7/08 (2006.01) B28B 19/00 (2006.01) E03F 3/06 (2006.01) F16L 55/1645 (2006.01)
Patent
CA 2199680
A method and apparatus for quickly and inexpensively providing a constant extrusion pressure for pipeline lining with a mortar. A mandrel is inserted in a pipeline section with a slug of mortar ahead thereof. A pushing force is applied thereto to overcome resistance to movement thereof. A constant tension pull is applied to the mandrel to effect relatively constant but effective extrusion pressure between the mandrel and the pipeline wall for extrusion of mortar on the inner wall of the pipeline section.
Méthode et appareil pour fournir rapidement et à peu de frais une pression d'extrusion constante en vue d'appliquer un revêtement intérieur de mortier dans une canalisation. On introduit un mandrin dans une section de canalisation avec une charge de mortier devant. Une force de traction constante est appliquée au mandrin pour exercer une pression d'extrusion relativement constante, mais efficace, entre le mandrin et la paroi de la canalisation pour extruder le mortier contre la paroi interne de la section de canalisation.
Macrae & Co.
Perkins Patricia R.
LandOfFree
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