Patent ID: 9310000
Filing Date: 2016-04-12
CPC Classification: F16L

Claim Text:
1. A retractable pipe structure comprising: an inner tube that is resilient and is configured to be extended and retracted; an outer tube, a diameter thereof greater than the inner tube and covering the inner tube, wherein the outer tube is resilient and compressed to a wrinkled unit, and after being extended, length of the outer tube is greater than an original length of the inner tube; two connectors, disposed at the both ends of the inner tube and outer tube, and each of the two connectors having a connecting portion for the ends of the inner tube and outer tube, the connecting portion having a resilient tightening unit and a restricting ring, wherein an inner wall of the restricting ring has a circular engaging unit, and an outer wall thereof has a plurality of resilient slots, and the connecting portion further includes a screw section and a connecting ring; and two locking rings, each of which having a threaded section with an inner thread corresponding to the screw section of the connector, and forming a squeezing portion corresponding to the restricting ring.