Pipes for conveying drinking water
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United States of America Patent
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Jan 28, 2003
Grant Date -
N/A
app pub date -
Mar 8, 1996
filing date -
Mar 10, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to pipes for conveying drinking water, including a main layer made of polyolefin covered on the outside with a layer of a thermoplastic polymer which is impervious to hydrocarbons, such as, for example, polyamides, polyvinylidene fluoride, ethyl/vinyl alcohol copolymers or polyesters. These pipes are particularly useful for pipes buried in soils that may be contaminated with hydrocarbons.
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