Pressure exchangers

Claim 1

A PRESSURE EXCHANGER INCLUDING: (A) AN OUTER TUBULAR MEMBER HAVING AN INTERNAL CIRCUMFERENTIAL SURFACE, (B) AN INNER MEMBER HAVING AN INTERNAL CIRCUMFERENTIAL SURFACE MOUNTED WITHIN THE TUBULAR MEMBER, (C) A PLURALITY OF WALLS CARRIED BY ONE OF SAID MEMBERS AND EXTENDING FROM THE CIRCUMFERENTIAL SURFACE THEREOF TO POSITIONS ADJACENT THE CIRCUMFERENTIAL SURFACE OF THE OTHER OF SAID MEMBERS TO DEFINE THEREBETWEEN OF A PLURALITY OF OPEN-ENDED CELLS THE WALL-CARRYING MEMBER BEING CONSTRUCTED TO PERMIT THE WALLS TO SLIDE THEREIN, (D) END-PLATE STRUCTURE EFFECTIVE TO CLOSE THE ENDS OF THE CELLS BUT HAVING PORTS THEREIN, INCLUDING A PORT TO CONVEY FLUID AT A HIGH-PRESSURE AND A PORT TO CONVEY FLUID AT A LOWER-PRESSURE, (E) MEANS TO PERMIT ROTATION OF THE WALL-CARRYING MEMBER, (F) THE INNER AND OUTER MEMBERS BEING ECCENTRIC TO EACH OTHER, THE ARRANGEMENT BEING SUCH THAT THE DISTANCE BETWEEN THEIR OPPOSED CIRCUMFERENTIAL SURFACES IS A MINIMUM ADJACENT THE PORT TO CONVEY FLUID AT A HIGH-PRESSURE AND IS A MAXIMUM ADJACENT THE PORT TO CONVEY FLUID AT A LOWER-PRESSURE, THE WALLS SLIDING INWARDLY AND OUTWARDLY OF THE WALL-CARRYING MEMBER AS THE DISTANCE BETWEEN SAID SURFACES VARIES FROM A MINIMUM TO A MAXIMUM, AND (G) THE END-PLATE STRUCTURE HAVING A SUBSIDIARY PORT TO CONVEY FLUID TO THE CELLS, WHICH PORT IS LOCATED TO FOLLOW, IN THE DESIRED DIRECTION OF ROTATION OF THE WALL-CARRYING MEMBER, THE PORT TO CONVEY FLUID AT A HIGH-PRESSURE BUT PRECEDE THE PORT TO CONVEY FLUID AT A LOWER-PRESSURE.