| 摘要 |
An emergency breathing hood for use with a breathing apparatus has a plastic hood made of a gas-impermeable, flame-resistant and transparent plastic film for covering the head of the wearer, a mouthpiece secured to and extending through the plastic hood, for providing a connection between the wearer's mouth and the breathing apparatus, and a nose blocking device for blocking the gas inflow into the nostrils and inhibiting outflow from the nostrils of the user, the nose blocking device being a cylindrically shaped device supported within the hood so that the cylindrically shaped device is positioned in front of and in contact with the wearer's nostrils when the hood is worn, and a thin elastic material over the cylindrically shaped device and extending over an area effective for covering the wearer's nostrils. |
