| 摘要 |
A socket construction is provided for a fitting having a body of a first, smaller diameter and a forward end. The socket construction includes an enlarged, cylindrical socket of a second, larger diameter. The socket is integrally formed of the same material as the fitting and is defined by a cylindrical sidewall. The sidewall has an inner cylindrical periphery and an outer cylindrical periphery, the outer cylindrical periphery of the socket being of uniform diameter. The sidewall terminates forwardly at the forward end of the fitting in a sidewall front end terminus for receiving a spigot end of an adjoining member. A rear end terminus of the socket is spaced rearwardly from the front end terminus. A lip is also provided, which is integral with the socket, and which extends radially inwardly from the front end terminus to define a gasket pocket with the inner cylindrical periphery. The construction includes an inelastic, integral, non-helical, closed reinforcing ring extending radially outwardly from the outer periphery of the socket sidewall for increasing the resistance of the sidewall to fracture upon insertion of the spigot end. The reinforcing ring has an outer periphery that is greater than the outer periphery of the socket sidewall. The reinforcing ring is spaced forwardly from the sidewall rear end terminus. |
