Patent ID: 6565125
Filing Date: 2003-05-20
Classification: F16L

Abstract:
A coupling comprising:a first end defining a first open region adapted for receipt of an associated metal pipe end; a selectively constrictable collar located in said first open region, said collar, when unconstricted, adapted for receipt onto an associated metal pipe end inserted into said first open end; an actuation member engaged with said collar and selectively movable to constrict said collar into gripping engagement with an associated metal pipe end inserted through the collar; a second end defining a second open region in fluid communication with said first open region and adapted for receipt of an associated plastic pipe end, said second end including a movable portion having a tapered inner surface that at least partially defines said second open region, said tapered inner surface converging in a direction moving away from said first end; a selectively constrictable gripping ring located in said second open region, said gripping ring, when unconstricted, defining an inner diameter adapted for receipt onto an associated plastic pipe end inserted into said second open region and defining a tapered outer surface; and, at least one tie fastener operably engaged with said movable portion and selectively adjustable to move the movable portion into engagement with said gripping ring so that said tapered inner surface of said movable portion bears against said tapered outer surface of said gripping ring to constrict said gripping ring radially about an associated plastic pipe end inserted in said second open region and through the gripping ring.