Under-water diving equipment

Claim 1

A MASK FOR USE IN CONJUNCTION WITH UNDER-WATER BREATHING EQUIPMENT, SAID MASK BEING FORMED OF WATERPROOF MATERIAL AND HAVING A SOLID BODY PORTION CONFIGURED TO DEFINE A CHAMBER AROUND THE MOUTH OF THE WEARER; SAID MASK HAVING A SOFT RESILIENT COMPLIANT INNER WALL INTEGRAL WITH SAID BODY PORTION AND EXTENDING UPWARDLY FROM THE BOTTOM PORTION THEREOF AND ACROSS SAID CHAMBER FROM ONE SIDE OF THE BODY PORTION TO THE OTHER AND OUTWARDLY OF THE BOTTOM EDGE, SAID INNER WALL ENCLOSING THE LOWER PORTION OF SAID CHAMBER, ANE BEING CONFIGURED TOGETHER WITH THE BOTTOM PORTION OF CONFORM WITH THE CONTOUR OF THE CHIN OF THE WEARER, AND BEING POSITIONED TO BEAR AGAINST THE CHIN OF THE WEARER, AND BEING POSITIONED TO BEAR AGAINST THE CHIN AND TO MOVE WITH MOVEMENTS OF THE CHIN WHILE MAINTAINING SUCH WATER-TIGHT SEALING ENGAGEMENT; SAID MASK FURTHER HAVING SOFT RESILIENT, COMPLIANT SIDES FORMED INTEGRAL WITH SAID BODY PORTION AND CONFIGURED TO EXTEND REARWARDLY AND UP EACH CHECK OF THE WEARER OVER A SUBSTANTIAL PORTION OF EACH CHECK AND TO THE BONY REGION THEREOF, SAID RESILIENT COMPLIANT SIDES BEING POSITIONED TO BEAR AGAINST THE CHEEKS OF THE WEARER IN A WATER-TIGHT SEALING ENGAGEMENT THEREWITH, AND TO MAINTAIN SUCH WATER-TIGHT SEALING ENGAGEMENT IN THE PRESENCE OF JAW MOVEMNTS OF THE WEARER; AND SAID MASK FURTHER HAVING A THIN SOFT RESILIENT COMPLIANT UPPER EDGE FORMED INTEGRAL WITH SAID BODY PORTION AND EXTENDING UPWARDLY FROM THE TOP SURFACE OF SAID BODY PORTION, SAID UPPER EDGE BEING CONFIGURED TO EXTEND OVER THE UPPER LIP OF THE WEARER WITH THE INNER SURFACE THEREOF ENGAGING SUCH UPPER LIP OVER ESSENTIALLY THE ENTIRE SURFACE THEREOF, AND SAID UPPER EDGE BEING CONFIGURED TO BEAR AGAINST THE UPPER LIP OF THE WEARER IN WATER-TIGHT SEALING RELATIONSHIP THEREWITH DIRECTLY UNDER THE NOSE OF THE WEARER; AN OPENING IN THE FRONT OF SAID CHAMBER A DIAPHRAGM MOUNTED ON SAID BODY PORTION EXTENDING ACROSS SAID OPENING TO FORM AN OUTER WALL FOR THE CHAMBER; AN APERTURED WALL MOUNTED ON SAID BODY PORTION TO FORM A WATER CHAMBER ON THE OUTER SIDE OF SAID DIAPHRAGM; INLET MEANS MOUNTED ON SAID BODY PORTION FOR SUPPLYING INLET AIR TO SAID CHAMBER AND INCLUDING A VALVE; VALVE ACTUATOR MEANS COUPLED TO SAID VALVE AND EXTENDING TO SAID DIAPHRAGM TO OPEN SAID VALVE WHEN SAID DIAPHRAGM IS DRAWN INWARDLY IN RESPONSE TO INHALING BY THE WEARER; AND EXHAUST MEANS MOUNTED ON SAID BODY PORTION AND INCLUDING AN EXHAUST VALVE ADAPTED TO OPEN IN RESPONSE TO EXHALING BY THE WEARER.