US 6,199,916 B1 · Spin welded fluid connector

Abstract

A joint between a fluid connector body and a plastic tube is formed at least in part by spin welding, wherein the portion of the connector which is configured to receive the tube defines inner and outer surfaces which engage the inner and outer surfaces of the mating tube to create redundant circumferentially continuous seals between the fluid passageway and the outside environment. The use of multi-layer co-extruded plastic tubing having intermediate or bonding layers is particularly advantageous inasmuch as separate inner and outer seals are established between the connector housing and the inner and outer tubing layers, respectively, to ensure that neither system fluids nor foreign contaminants are exposed to the intermediate tube layers, thereby preventing capillary adsorption or delamination.

Claims16

Dependent claims

In combination a fluid connector for spin welding connection with a tube having a generally planar end surface, said connector comprising a body defining a through passage interconnecting a first opening adapted for receiving a mating conduit and a second opening adapted for receiving said tube, said second opening defining radially opposed surfaces weldingly engaging outer and inner peripheral surfaces of said tube, said radially opposed surfaces extending circumferentially entirely around said second opening and axially converging, at least one of said radially opposed surfaces having a dual taper wherein one portion of said one radially opposed surface is disposed at a greater angle from a longitudinal axis of said second opening than an angle of a second portion of said one radially opposed surface.

Dependencies are inferred from the claim text.

Spin welded fluid connector

Life of this patent

Spin welded fluid connector

Life of this patent

Abstract

Claims16