초록 ▼

A secondary containment pipe system disposed around a primary pipe system and comprising a joint that is divided along a central parting plane and has laterally projecting flanges that form internal passages for adhesive sealing cement, that is injected through ports while the joint is clamped toget

A secondary containment pipe system disposed around a primary pipe system and comprising a joint that is divided along a central parting plane and has laterally projecting flanges that form internal passages for adhesive sealing cement, that is injected through ports while the joint is clamped together around secondary containment pipes. The joint has pipe sockets that have internal grooves that also are filled with injected cement, thus forming a continuous, uninterrupted seal around the interior of the joint, and also has spillover grooves and wells for minimizing leakage, and lateral aligning surfaces. The clamping means are C-shaped clips that can be left in place indefinitely. The secondary containment pipes also are divided, being formed by elongated pipe elements fitted together around the primary pipes and having snap-latching coupling means along their abutting edges. One embodiment has internal reinforcing flaps that extend across the abutting edges and define internal sealing passages along the coupling means to be filled with injected adhesive cement through external ports, and also has means along the free edges for holding the flaps in place. A second pipe embodiment has tongue-and-groove couplings along thickened edges, and internal passages along the couplings in the form of enlarged coupling grooves, and an external reinforcing strip is provided for optional use in pressurized systems.

대표청구항 ▼

For use in a secondary containment system for a primary pipe system, in combination with secondary containment joints having pipe sockets of generally circular cross-sectional shape, a secondary containment pipe comprising two side-by-side pipe elements fitted together on opposite sides of a central

For use in a secondary containment system for a primary pipe system, in combination with secondary containment joints having pipe sockets of generally circular cross-sectional shape, a secondary containment pipe comprising two side-by-side pipe elements fitted together on opposite sides of a central dividing plane and each having: an elongated body of generally semi-circular cross-sectional shape with two side edges extending along said plane and abutting against the side edges of the other pipe element, latching means including interfitting tongue-and-groove elements along the edges of said pipe elements, sized and shaped for a snap-latching fit for latching said pipe elements together, means defining a continuous sealing passage between opposed surfaces of said pipe elements along each pair of abutting edges, and injection port means to receive adhesive sealing cement for filling said sealing passages to seal the interior of the pipe and adhesively secure said pipe elements together.