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Fuel hose
 
   
Document Number
US Patent 7478652
Issued Date
January 20, 2009
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Abstract
A fuel hose has multilayered construction and a flexible corrugated portion with corrugation bottom portions and corrugation peak portions. The fuel hose includes a rubber layer and a resin layer that is a laminated on an inner side of the rubber layer. The resin layer has fuel permeation resistance and serves as a barrier layer. The corrugated portion satisfies a condition of H/W.gtoreq.1.1 when H represents a height of the corrugation measured between an inside of the corrugation bottom portion and an inside of the corrugation peak portion thereof, and 2W represents an axial distance between an inside of the corrugation bottom portion and an inside of an adjacent corrugation bottom portion.
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Number of Claims:
4
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Published
January 20, 2009
Application Number
11/689,561
Filed
March 22, 2007
US Classification
138/121   138/137
Int'l Classification
F16L   11/00   (20060101)  
Examiner
Priority Data
Mar 24, 2006 [JP] 2006-083749 Feb 27, 2007 [JP] 2007-047890
USPTO Field of Search
138/121   138/122   138/137  
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