Sphygmomanometric measuring apparatus

Claim 1

A BODY-FUNCTION DETECTOR STRUCTURE ADAPTED TO BE MOUNTED ON THE PINNA OF THE EAR OF A PERSON UNDER OBSERVATION, SAID STRUCTURE COMPRISING A TRANSMITTER MEMBER, A RECEIVER MEMBER, A HINGE MEMBER, SAID TRANSMITTER MEMBER AND SAID RECEIVER MEMBER BEING CARRIED, FOR LIMITED RELATIVE MOVEMENT, BY SAID HINGE MEMBER IN SUBSTANTIALLY FACE-TO-FACE RELATION, A SPRING MEMBER FOR NORMALLY BIASING SAID TRANSMITTER MEMBER AND SAID RECEIVER TOWARD EACH OTHER TO PROVIDE A PREDETERMINED MINIMUM INITIAL PRESSURE ON THE EAR, LOCKING MEANS INCLUDED IN SAID HINGE MEMBER TO LOCK SAID STRUCTURE IN AN INITIAL POSITION DETERMINED BY SAID SPRING MEMBER AND TO PREVENT RELATIVE MOTION BETWEEN SAID TRANSMITTER MEMBER AND SAID RECEIVER MEMBER WHEN SAID STRUCTURE IS POSITIONED ON THE EAR, AND MEANS FOR PROGRESSIVELY INCREASING THE PRESSURE ON SAID EAR BETWEEN SAID TRANSMITTER MEMBER AND SAID RECEIVER MEMBER TO VARY THE TRANSMISSION CHARACTERISTICS OF SAID EAR TO PRODUCE A SIGNAL CORRELATED TO THE DESIRED BODY-FUNCTION.