Coupling means for vortex apparatus

Claim 1

A VORTEX RATE SENSOR WHICH IS SUBJECT TO AN ANGULAR VELOCITY ABOUT AN AXIS OF A BODY ON WHICH IT IS MOUNTED COMPRISING: A FIRST ELEMENT HAVING A FIRST PASSAGE THERETHROUGH; A SECOND ELEMENT HAVING A SECOND PASSAGE THERETHROUGH; COUPLING MEANS, SAID COUPLING MEANS INCLUDING A PLURALITY OF ANNULAR DISC, SAID DISC BEING MAINTAINED IN A SPACED, PARALLEL RELATIONSHIP BY A PLURALITY OF SPACER ELEMENTS, SAID DISCS BEING MAINTAINED IN A SUBSTANTIALLY COAXIAL RELATIONSHIP BY A PLURALITY OF FASTENERS, SAID COUPLING MEANS PROVIDING A PLURALITY OF ANNULAR ELONGATED APERTURES, SAID COUPLING MEANS POSITIONED BETWEEN SAID FIRST AND SAID SECOND ELEMENTS SO AS TO FORM A CYLINDRICAL CHAMBER, THE AXIS OF SAID FIRST PASSAGE AND THE AXIS OF SAID SECOND PASSAGE BEING SUBSTANTIALLY COAXIAL WITH THE AXIS OF SAID COUPLING MEANS, THE SENSOR BEING ADAPTED TO BE CONNECTED TO A FLUID SOURCE WHEREBY A FLUID FLOWS FROM SAID FLUID SOURCE THROUGH SAID ANNULAR APERTURES ING SAID COUPLING MEANS, AND IS VISCOUSLY COUPLED TO THE ANGULAR VELOCITY OF SAID SENSOR THROUGH SAID COUPLING MEANS, AND SAID FLUID EXHAUSTING THROUGH SAID FIRST AND SECOND PASSAGES; AND READOUT MEANS LOCATED IN AT LEAST ONE OF SAID PASSAGES OPERABLE TO PROVIDE AN OUTPUT SIGNAL INDICATIVE OF THE ANGULAR VELOCITY APPLIED TO SAID SENSOR.