Patent ID: 6948527

Claim:
A hose, comprising: a) a flexible elongated body comprising a first end, a second end, and an interior channel defined along its length for transporting a fluid material from the second end to the first end during use; wherein said flexible elongated body is sufficiently flexible to extend and retract linearly along its length between a substantially extended position and a substantially retracted position; b) a biasing means interconnected with said flexible elongated body for generating a first force tending to extend said flexible elongated body longitudinally along its length; c) wherein said first end comprises a connector designed to connect to a vacuum pressure source capable of providing a vacuum pressure substantially below ambient air pressure; d) wherein said second end is adapted to attach to a valve means for selectively allowing and restricting the flow of the fluid material entering said interior channel from the ambient environment, wherein said valve means when restricting the fluid material from entering said second end causes said vacuum pressure source to create a lower pressure within said interior channel, wherein the lower pressure is substantially below ambient pressure, and e) wherein said lower pressure generates a second force opposed to said first force, wherein said second force is sufficiently great to overcome said first force when in the substantially extended position, whereby the second force tends to retract the flexible elongated body longitudinally along its length, and f) a pressure relief valve defined on said hose for bleeding air into said interior channel when the second end is substantially closed-off during use, wherein said pressure relief valve is positioned on the hose between said vacuum pressure source and said valve means.