Patent ID: 7399002

Claim:
A piping system for carrying a liquid comprising: a. an inner pipe through which the liquid flows; b. an outer pipe at least partially surrounding the inner pipe; c. a bellows having a first end and a second end positioned between the inner and outer pipe; d. a movable bellows ring connecting the first end of the bellows to the inner pipe; e. a first fixed bellows ring connecting the second end of the bellows to the outer pipe; f. a bellows guide featuring a first end connected to the first fixed bellows ring and receiving the movable bellows ring in a sliding fashion, said bellows guide also featuring a second end; g. a second fixed bellows ring connecting the second end of the bellows guide to the outer pipe; h. a bellows shield connected to the second fixed bellows ring, said bellows shield engaging the moveable bellows ring in a sliding fashion; and i. a seal positioned between the inner pipe and the bellows guide so that liquid leaked from the inner pipe does not travel out from between the bellows guide and the inner pipe into an annular space between the inner pipe and the outer pipe, said seal also being positioned between the moveable bellows ring and the bellows shield.