Hose
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United States of America Patent
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May 13, 2014
Grant Date -
Feb 21, 2013
app pub date -
Oct 22, 2012
filing date -
May 8, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a bellows hose, which is capable of being used without leakage, and which has a longer length and/or diameter than has been previously achievable. A bellows hose comprises an inner tubular bellows and an outer tubular bellows. An insulation layer is provided between the bellows. An armoured layer is provided around the outer bellows, to improve the insulation further. The hose can have length above 30 m and a diameter above 400 mm. A method of, and apparatus for, making the hose are also described, which involves the use of a non-metallic mandrel.
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