Diaphragm mounting for stethoscope

Claim 1

A HEAD ASSEMBLY FOR A STETHOSCOPE INCLUDING A BOWL, A DIAPHRAGM FORMED OF A PLIANT MATERIAL AND HAVING A MAJOR BODY PORTION AND A PERIPHERAL PORTION AND IN OPERATING CONDITION SAID MAJOR BODY PORTION BEING ARCHED UPWARDLY AWAY FROM SAID BOWL A SUBSTANTIAL DISTANCE TO ENABLE THE TAUTNESS THEREOF TO BE VARIED DEPENDENT UPON THE DEGREE OF PRESSURE AT WHICH SAID UPWARDLY ARCHED MAJOR BODY PORTION IS APPLIED AGAINST A BODY TO THEREBY SIGNIFICANTLY WIDEN THE RANGE OF FREQUENCY RESPONSE TO THE STETHOSCOPE, SAID BOWL HAVING A SUPPORTING SURFACE AND PROVIDED WITH AN AREA IN A PLANE BELOW SAID SUPPORTING SURFACE INTO WHICH SAID PERIPHERAL PORTION OF THE DIAPHRAGM MAY BE BENT TO MAINTAIN SAID MAJOR BODY PORTION OF THE DIAPHRAGM IN ITS UPWARDLY ARCHED CONDITION, AND MEANS ADJUSTABLY CONNECTED WITH SAID BOWL AND IN ENGAGEMENT WITH THE PERIPHERAL PORTION OF SAID DIAPHRAGM AND OPERABLE THEREON TO BEND AND MAINTAIN THE PERIPHERAL PORTION OF THE DIAPHRAGM IN SAID AREA AND THE MAJOR BODY PORTION OF THE DIAPHRAGM IN UPWARDLY ARCHED OPERATIVE CONDITION.