Fluid restrictor for linear flow meters

Claim 1

A FLUID RESTRICTOR FOR LINEAR FLOW METERS COMPRISING AN ELONGATED HOUSING DEFINING A CHAMBER, A LONGITUDINALLY EXTENDING ARBOR DISPOSED IN SAID HOUSING ADJACENT ITS AXIS, SAID ARBOR BEING CLOSED TO THE FLOW OF FLUIDS THERETHROUGH, AN ARRAY OF FLOW CONFINING ELEMENTS DISPOSED RADIALLY OF SAID ARBOR, SPACED APART A UNIFORM DEPTH RANGING FROM 0.002-0.100", MEANS FOR SO SPACING SAID ELEMENTS WITH RESPECT TO EACH OTHER AND TO SAID ELONGATED HOUSING THEREBY PROVIDING A PLURALITY OF SHALLOW FLOW PATHS, AND UPSTREAM AND DOWNSTREAM TAPS EXTENDING INTO SAID ELONGATED HOUSING AND, RESPECTIVELY COMMUNICATING WITH THE UPSTREAM AND DOWNSTREAM ENDS OF SAID ARRAY OF FLOW CONFINING ELEMENTS, SAID UPSTREAM TAP BEING POSITIONED TO COMMUNICATE DIRECTLY WITH THE INTERIOR OF SAID FLOW CONFINING ELEMENTS BY PLACEMENT ON THE HOUSING AT A LOCATION DOWNSTREAM OF THE ENTRANCE TO SAID ELEMENTS EQUAL TO AT LEAST 20 TIMES THE AVERAGE SPACING DISTANCE BETWEEN ELEMENTS.