Rescue collar for use by e.g. diver, has aluminium case with compressed air reserve connected to bladder by two lateral air ducts, and timer transmitting command to reserve for inflating bladder when preset diving time is exceeded

摘要

The collar has an aluminum case (1) with a compressed air reserve (2), which is connected to a bladder (4) by two lateral air ducts through a valve (3). A timer transmits a command to the reserve for inflating the bladder when the preset diving time in the timer is exceeded. The bladder will support the head of a diver by being placed below the chin and back side of divers neck.