simmons

Claim 1

MEANS FOR EQUALIZING THE PRESSURES OF A STATIC BODY OF FLUID AND A FLOWING BODY OF FLUID COMPRISING, IN COMBINATION, FIRST AND SECOND ADJACENT PLATES HAVING A FLEXIBLE DIAPHRAGM INTERPOSED THEREBETWEEN, THE OPPOSING FACES OF SAID PLATES BEING PROVIDED WITH SMOOTH CONCAVE WALLS THEREBY FORMING TWO OPPOSING CHAMBERS SEPARATED BY SAID DIAPHRAGM, SAID FIRST PLATE BEING PROVIDED WITH FIRST AND SECOND SPACED PASSAGES EACH COMMUNICATING BETWEEN A REGION EXTERIOR OF SAID FIRST AND A REGION WITHIN SAID FIRST PLATE ADJACENT THE CHAMBER IN SAID FIRST PLATE, SAID FIRST PLATE ALSO BEING PROVIDED WITH A PLURALITY OF THIRD PASSAGES EXTENDING BETWEEN EACH OF SAID FIRST AND SECOND PASSAGES AND THE CHAMBER IN SAID FIRST PLATE THEREBY FORMING SEPARATE INLET AND OUTLET OPENINGS FOR THE CHAMBER IN SAID FIRST PLATE WHEREBY THE FLOWING BODY OF FLUID CAN BE CIRCULATED THROUGH THE CHAMBER IN SAID FIRST PLATE, SAID SECOND PLATE BEING PROVIDED WITH FOURTH AND FIFTH SPACED PASSAGES EACH COMMUNICATING BETWEEN A REGION EXTERIOR OF SAID SECOND PLATE AND A REGION WITHIN SAID SECOND PLATE ADJACENT THE CHAMBER IN SAID SECOND PLATE, SAID SECOND PLATE BEING PROVIDED WITH A PLURALITY OF SIXTH PASSAGES EXTENDING BETWEEN EACH OF SAID FOURTH AND FIFTH PASSAGES AND THE CHAMBER IN SAID SECOND PALTE THEREBY FORMING SEPARATE INLET AND OUTLET OPENINGS FOR THE CHAMBER IN SAID SECOND PLATE WHEREBY THE STATIC BODY OF FLUID CAN BE CIRCULATED THROUGH THE CHAMBER IN SAID SECOND PLATE, AND SEALING MEANS PROVIDING FLUID-TIGHT CONNECTIONS BETWEEN SAID FIRST PLATE AND SAID DIAPHRAGM AND BETWEEN SAID SECOND PLATE AND SAID DIAPHRAGM, SAID DIAPHRAGM BEING DEFLECTED BY UNEQUAL PRESSURES IN THE CHAMBERS IN SAID FIRST AND SECOND PLATES, SAID THIRD AND SIXTH PASSAGES REMAINING UNOBSTRUCTED IRRESPECTIVE OF THE PRESSURE DIFFERENTIAL ACROSS SAID DIAPHRAGM.