Patent ID: 7128095
Filing Date: 2006-10-31
Classification: F16L

Abstract:
1. A vibration damping pipe which is expansible-and-contractible in an axial direction, comprising: an inner member having a bellows shape, the inner member comprising austenitic stainless steel; an outer member having a bellows shape disposed outside the inner member, the outer member comprising austenitic stainless steel; and a viscoelastic member disposed between the inner member and the outer member, the viscoelastic member comprising silicone rubber; wherein the inner member extends in the axial direction from a first inner member end to a second inner member end, and the first inner member end and the second inner member end are separated by a first distance in the axial direction; wherein the outer member extends in the axial direction from a first outer member end to a second outer member end, and the first outer member end and the second outer member end are separated by a second distance in the axial direction; wherein the first distance is greater than the second distance; wherein the viscoelastic member extends in the axial direction from a first viscoelastic member end substantially aligned with the first outer member end to a second viscoelastic member end substantially aligned with the second outer member end, and the first viscoelastic member end and the second viscoelastic member end are separated by a distance substantially equal to the second distance in the axial direction.