Patent ID: 7717473
Filing Date: 2010-05-18
Classification: F16L

Abstract:
1. A transfer tube assembly comprising: a pair of fittings each having a main fluid port and a secondary port; a single ball joint proximate each fitting; an inner, main fluid passage including a first slip joint; an outer, secondary fluid passage including a second slip joint; wherein the inner fluid passage is disposed entirely within the outer fluid passage; wherein the inner fluid passage fluidly connects the main fluid ports of the fittings; wherein the outer fluid passage extends between the pair of fittings and is fluidly connected to the secondary ports of the fittings; wherein each ball joint comprises a single ball member having an interior diameter forming a portion of the inner fluid passage; wherein each ball joint comprises a single socket having an inner concave surface engaging a convex spherical surface of the ball member; wherein each ball joint comprises a cover member fixedly attached to one of the pair of fittings, the cover member engaging an outer convex spherical surface of the socket; and the assembly further comprising a through hole through a portion of the socket member, the through hole forming a portion of the outer, secondary fluid passage.