SPIRALLY WAVED SYNTHETIC RESIN CONDUIT WITH COUPLING, AND CONNECTION STRUCTURE FOR SPIRALLY WAVED SYNTHETIC RESIN CONDUIT
First Claim
1. A spirally waved synthetic resin conduit provided with a coupling, the conduit comprising a receiver opening provided at an end of the conduit and connected to another spirally waved synthetic resin conduit, whereinthe receiver opening is formed with a foamable resin into a cylindrical shape so as to extend from the end of the spirally waved synthetic resin conduit in an axial direction of the conduit, andan FRP layer is formed by impregnating reinforcing fibers with a resin, at least on an outer peripheral surface of the formed receiver opening at an connection end.
1 Assignment
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Accused Products
Abstract
A spirally waved synthetic resin conduit has a coupling and a connection structure, and is configured with a small number of components, achieving sufficient water and pressure resistances, excellent sealing properties with no need for any rigid material or high accuracy, reduction in weight and cost, and easy handling with facilitated connection work on site. The spirally waved synthetic resin conduit, provided with a coupling, includes a receiver opening provided at an end of the conduit and connected to another spirally waved synthetic resin conduit. The receiver opening is formed with a foamable resin into a cylindrical shape so as to extend from the end of the spirally waved synthetic resin conduit in an axial direction of the conduit, and an FRP layer is formed by impregnating reinforcing fibers with a resin, at least on an outer peripheral surface of the formed receiver opening at a connection end.
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Citations
20 Claims
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1. A spirally waved synthetic resin conduit provided with a coupling, the conduit comprising a receiver opening provided at an end of the conduit and connected to another spirally waved synthetic resin conduit, wherein
the receiver opening is formed with a foamable resin into a cylindrical shape so as to extend from the end of the spirally waved synthetic resin conduit in an axial direction of the conduit, and an FRP layer is formed by impregnating reinforcing fibers with a resin, at least on an outer peripheral surface of the formed receiver opening at an connection end.
Specification