Patent ID: 7516989
Filing Date: 2009-04-14
Classification: B29C,F16L

Abstract:
1. A piping connector for connecting a first pipe and a second pipe, said connector comprising: a socket having a tubular shape attachable to an end of the first pipe to be connected; a plug having a tubular shape attachable to an end of the second pipe; a seal ring arranged at an inner periphery of the socket for sealing an interval between the inner periphery of the socket and an outer periphery of the plug in an airtight manner; and a hold ring fixedly attached to the inner periphery of the socket for restricting the seal ring from moving in an axial direction, wherein the first pipe and the second pipe are connectable by inserting the plug to fit to the socket; wherein the hold ring comprises: wherein the groove of the hold ring and the inner periphery of the socket define a space therebetween so that, when the hold ring is welded, a burr is confined within the space.