Resuscitator

Claim 1

A RESUSCITATOR COMPRISING A COMPRESSIBLE, SELF-DISTENDING RESERVOIR HAVING AN OPENING WHICH CONSTITUTES AN AIR INLET TO AND AN AIR OUTLET FROM THE RESERVOIR; A HOLLOW HEAD MEMBER CONNECTED TO SAID OPENING, SAID HEAD MEMBER HAVING AN INLET PASSAGE COMMUNICATING WITH THE RESERVOIR, AN OUTLET PASSAGE FOR CONNECTION TO A FACE MASK, AND AT LEAST ONE APERTURE COMMUNICATING WITH THE ATMOSPHERE; AND A RESILIENTLY BIASED VALVE MOVABLE BETWEEN INLET AND OUTLET CONTROLLING POSITIONS IN THE HEAD MEMBER, SAID VALVE INCLUDING A VALVE STEM WHICH PROJECTS INTO THE INTERIOR OF THE HEAD MEMBER AND EXTENDS PAST SAID OUTLET PASSAGE FROM THE HEAD MEMBER IN A DIRECTION TOWARD SAID INLET PASSAGE, A TRANSVERSELY DISPOSED DISC ON SAID VALVE STEM, SAID DISC BEING ADAPTED TO SLIDE ALONG SAID VALVE STEM, A VALVE SEAT FOR THE DISC IN THE VICINITY OF SAID APERTURE IN THE HEAD MEMBER, AND A SPRING WHICH EXTENDS ALONG SAID VALVE STEM, SAID SPRING BEING NORMALLY OPERATIVE TO MAINTAIN THE DISC AWAY FROM SAID VALVE SEAT AT THE INNER END OF THE VALVE STEM; SAID VALVE BEING DIRECTLY OPERATIVE BY AIR PRESSURE TO CLOSE SAID APERTURE IN THE HEAD MEMBER WHENEVER THE RESERVOIR IS COMPRESSED, AND IS ADAPTED TO REMAIN IN THE CLOSE POSITION AS LONG AS THE PRESSURE WITHIN THE RESERVOIR AND HEAD MEMBER EXCEEDS NORMAL HUMAN EXHALATION PRESSURE.