Fluid meter construction

Claim 1

IN A MEASURING WHEEL METER FOR MEASURING THE FLOW OF FLUIDS HAVING A ROTATABLE MEASURING WHEEL WITH BLADES ADAPTED TO BE ACTED ON TANGENTIALLY BY A FLOWING FLUID, THE IMPROVEMENT WHICH COMPRISES MEANS DEFINING A FIRST IMPERFORATE SPIRAL PATH OF FLUID FLOW OF CONTINUOUSLY DECREASING CROSS SECTIONAL AREA LEADING TO SAID MEASURING WHEEL AND TERMINATING SUBSTANTIALLY TANGENTIALLY AT SAID MEASURING WHEEL, MEANS DEFINING A SECOND IMPERFORATE SPIRAL PATH OF FLUID FLOW LEADING TANGENTIALLY FROM SAID MEASURING WHEEL IN THE SAME DIRECTION OF SPIRAL OF SAID FIRST SPIRAL PATH AND CONTINUOUSLY INCREASING IN CROSS SECTIONAL AREA IN A DIRECTION AWAY FROM SAID MEASURING WHEEL, SAID FIRST AND SECOND SPIRAL PATH MEANS BEING IN DIRECT UNCONSTRAINED TRANSITIONAL FLOW COMMUNICATION WITH EACH OTHER AT SAID MEASURING WHEEL AND TOGETHER DEFINING AN UNOBSTRUCTED SPIRAL VORTEX PATH OF FLOW CONTINUING FROM SAID FIRST PATH TO SAID MEASURING WHEEL AND FROM SAID MEASURING WHEEL TO SAID SECOND PATH, THE NARROWEST FLOW CROSS-SECTION WITHIN SAID METER BEING DEFINED BY THE TRANSITIONAL FLOW PATH MEANS AT THE MEASURING WHEEL INTERCONNECTING THE TWO SPIRAL FLOW PATHS, SAID TRANSITIONAL FLOW PATH MEANS BEING THE SOLE PATH OF FLUID FLOW COMMUNICATION BETWEEN THE FIRST AND SECOND IMPERFORATE SPIRAL FLOW PATHS AND SAID MEASURING WHEEL BEING DISPOSED WITHIN SAID TRANSITIONAL FLOW PATH MEANS IN OPEN COMMUNICATION WITH SAID SPIRAL FLOW PATHS AROUND THE ENTIRE PERIPHERY OF SAID WHEEL.