Patent ID: 9746119
Date: 2017-08-29
CPC Classifications: F16L,Y10T

Claim:
1. A grooved-ended resilient pipe expansion joint and pipe combination comprising: a pair of grooved ended pipes mechanically coupled into the grooved-ended resilient expansion joint; pair of grooved pipe nipples having an outer diameter substantially the same as the pair of grooved ended pipes; the expansion joint further comprising a resilient expansion member having a central resilient portion and two resilient axially disposed cylindrical ends; each end having a radially outwardly raised distal cylindrical gasket portion with at least one inside shoulder having an inner diameter sized substantially the same as an outer diameter of one of the pair of grooved ended pipes; each end having a neck portion between the central resilient portion and the radially outwardly raised distal cylindrical gasket portion the neck portion having an outer diameter substantially the same as an inner diameter of one of the grooved pipe nipples; and a mechanical pipe coupling for engaging one of the pair of grooved ended pipes and one of the pair of grooved pipe nipples.