PIPE-IN-PIPE QUICK CONNECTION STRUCTURE
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United States of America Patent
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Issued Date -
Mar 2, 2017
app pub date -
Jul 13, 2016
filing date -
Aug 24, 2015
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Abstract
A pipe-in-pipe quick connection structure comprises: an outer pipe; an inner pipe, disposed in the outer pipe; a water input piece, sleeved around one end of the outer pipe; a water output piece, sleeved around the other end of the outer pipe; two connectors, each inserted into each end of outer pipe, and connected respectively to the water input piece and the water output piece; two inner pipe fixing rings each being used to fix each connector and the inner pipe; and two outer pipe connection rings, each sleeved around an outer wall of each connector, and connected respectively to the water input piece and the water output piece. The pipe-in-pipe quick connection structure further includes two positioning protrusions, two fix protrusion pins, two positioning and guiding slots, two positioning and fixing holes, two copper sleeves, two tight seal slots, and two tight seal rings.
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