Patent ID: 8905440
Filing Date: 2014-12-09
Classification: F16L,Y10T

Abstract:
1. A grooved-ended resilient expansion joint 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 a pipe to be joined; each end having a neck portion between the central resilient portion and the radially outwardly raised distal cylindrical gasket portion and sized to receive a grooved-ended pipe nipple; the grooved pipe nipple set around the neck portion, the grooved pipe nipple having the same outer diameter as the pipe to be joined, and grooved to mate with a selected mechanical pipe coupling connector; and a mechanical pipe coupling connector having axially inward projecting lands that mate with the end groove in the pipe to be joined and with the groove in the pipe nipple set around the neck portion; wherein the mechanical pipe coupling connector is fastened around the grooved pipe nipple and the end groove in the pipe to be joined, the end groove in the pipe to be joined is disposed inside the inside shoulder of the cylindrical gasket portion, and the cylindrical gasket portion is thus disposed within an interior gasket receiving portion of the connector.