Patent ID: 7644957
Filing Date: 2010-01-12
Classification: F16L,H02G

Abstract:
1. An expansion-deflection coupling comprising: a pair of hub fittings positioned at opposing ends, wherein one of said pair of hub fittings has an internal diameter adapted to secure to an external diameter of an electrical conduit coupling for attachment thereto; a flexible hollow cylinder extending between said hub fittings; at least one mid-coupling located within the cylinder, said at least one mid-coupling is a circular band of material having two open circular ends and material therebetween; and at least two funneled tubes extending within the flexible hollow cylinder, wherein each of said funneled tubes include two conical ends having an inner conical surface and an outer conical surface parallel thereto and one of said two conical ends is secured within each of said two open circular ends and one conical end is secured to each of said hub fittings, said conical ends and said at least one mid-coupling allow for linear movement therebetween to provide for linear contraction and expansion of said conduit attached thereto; wherein said hub fittings include inwardly projecting lips and one of said two conical ends is snapped fitted onto one of said lips.