Patent ID: 8011364
Filing Date: 2011-09-06
Classification: B63C,Y10T

Abstract:
1. A valve for use in an underwater breathing device, the valve configured to produce positive end-expiratory pressure in the airway of a user of the underwater breathing device, the valve comprising: a plate defining an exhalation port and at least one chamber port; an exhalation conduit connected to the exhalation port, a lower portion of the exhalation conduit being divided by a septum which divides the exhalation conduit and the exhalation port into a first exhalation conduit connected to a first exhalation port and a second exhalation conduit connected to a second exhalation port; and a flexible membrane that is sealable against a surface of the plate and is sized and positioned to be capable of sealing the first exhalation port and the second exhalation port, the flexible membrane comprising: