Patent ID: 8052177
Filing Date: 2011-11-08
Classification: B25B,F16L

Abstract:
1. A pipe coupling comprising a tubular body having at least one open end, stop means disposed within the tubular body distal to the open end to stop a pipe when it is inserted a predetermined distance into the tubular body, sealing means adapted to engage an outer surface of the pipe, the sealing means is intermediate the stop means and the open end, and a pipe engaging means having a variable diameter to clamp and release an inserted pipe as a result of the diameter of the pipe engaging means reducing and increasing respectively and a pipe release means, the pipe release means being movably mounted in the open end and having a pipe clamping position and a pipe release position, the pipe release means being movable between these two positions by an operator, guard means being movably mounted in the pipe coupling to cover the sealing means when the pipe is being inserted or removed and the guard means is formed by a cylindrical tube coaxial with and moveably mounted in the tubular body whereby the sealing means is protected from the pipe by the guard means when the pipe is being inserted or removed.