| 摘要 |
An improved elastic gasket-type pipe coupling device for providing a leak-proof joint between two adjacent pipe segments in a pressurized plumbing system. According to the preferred embodiment of the invention, the pipe coupling includes a cylindrical elastic gasket, a metallic compression band circumferentially disposed about the elastic gasket, and a plurality of tensioning bands attached to and encircling the compression band. The cylindrical elastic gasket includes an inwardly extending, centrally disposed separation ring and at least two integral, inwardly extending sealing rings symmetrically disposed on opposing sides of the separation ring. An enhanced pressure-resistant seal is achieved by locating the tensioning bands at points immediately adjacent to and on both sides of each sealing ring.
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