20140291982 | PIPE COUPLING - A plastic pipe to metal pipe coupling includes a metal pipe, a plastic pipe and a metal retaining collar. The metal pipe has an inner diameter, a first end, a second end and a barbed outer portion proximate to the second end. The plastic pipe has an inner diameter, a first end and a second end. A portion of the plastic pipe proximate to the first end is disposed around the barbed outer portion of the metal pipe. The metal retaining collar is disposed around the portion of the plastic pipe and compresses the portion of the plastic pipe onto the barbed outer portion of the metal pipe. | 10-02-2014 |