Pipe with crack stopper feature, and process of protecting a pipe against propagation of cracks
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 20, 2002
Grant Date -
Aug 23, 2001
app pub date -
Feb 13, 2001
filing date -
Feb 22, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A steel pipe, includes an outer corrosive-preventive protective sheath, which has a surface layer of plastic material, and a crack stopper zone extending over a section of the pipe. The crack stopper zone includes a bandage which is wrapped around the pipe section and made of high-strength fiber material imbedded in a compacted matrix of thermoplastic and thermosetting plastic. The bandage is comprised of a plurality of wound layers joined to one another via the matrix by welding or gluing.
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