Patent 7108015 was granted and assigned to Flexcon Industries, Inc. on September, 2006 by the United States Patent and Trademark Office.
An in-line expansion tank. As fluid traverses a pipe within the tank, it may pass into and displace a diaphragm disposed outside of the pipe if the fluid pressure is greater than a tank pressure pushing the diaphragm against the pipe. When the fluid pressure decreases, the fluid passes from the diaphragm back into the pipe.