Oliff & Berridge
Refregerant transporting hose
 A refregerant transporting hose having an inner tube; an outer tube of a rubber material located radially outwardly of the inner tube; and a reinforcing fiber layer interposed between the inner and outer tubes, such that the reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body, the inner tube including a resinous layer formed of a blend of modified polyolefine and polymaide resin. Alternatively, the inner tube includes a resinous layer formed of a reaction product of polyamide, and polyolefine whose molecular chain has a pair of functional groups at both ends thereof. The hose has a high flexibility as well as a high resistance to gas permeation therethrough. 
Tokai Rubber Industries, Ltd.
F Y Y Y Y Y F B Y Y Y
F16L Y10T Y10T Y10T Y10T Y10T F16L B60H Y10T Y10T Y10T
additional additional additional additional additional additional inventional inventional additional additional additional
Koji Hiroaki
Akiyoshi Ito