The vent unit is moved to an open condition to enable fluid flow through a vent opening. The vent unit is moved back to a closed position due to tension in the tether. The tension results from inflation of the protection device away from a support unit by more than a preset distance....
The vent unit is moved back to a closed position due to tension in the tether. The tension results from inflation of the protection device away from a support unit by more than a preset distance.FISCHER, KURT F.DELVENTHAL, NEAL H.