| 摘要 |
A survival helmet device includes an airtight helmet for use with a survival suit. A snorkel member includes an open channel extending into the inner cavity of the helmet. As a user inhales, air passes through the snorkel channel, a one-way inhale valve, an inhale hose member, and is breathed into the user's mouth through a mouthpiece. As the user exhales, air enters an exhale hose member and passes through a one-way exit valve and into a control member. A control valve on the control member is manually operable for controlling passage of the exhaled airflow through an outlet opening and into the surrounding atmosphere. Operation of the control valve permits the user to selectively adjust the amount of air in the suit in order to increase or decrease the buoyancy of the suit. Air that is exhaled into the suit further serves to warm the user's body. |
| 主权项 |
1. A survival helmet device for use in combination with a survival suit, and said survival helmet device comprising:
a helmet surrounding an internal cavity and having an opening that is sized for passage of a users head therethrough and into the internal cavity, and said helmet being securable to the survival suit; a snorkel member having an inner channel extending between a top end and a bottom end of said snorkel member, wherein each of said top and bottom ends has an opening in fluid flow communication with the inner channel; a one-way inhale valve in the inner channel of said snorkel member, and said one-way inhale valve being structured and disposed for permitting passage therethrough of air that is directed into the inner channel from the top end of said snorkel member and towards the bottom end of said snorkel member; an inhale hose member in the internal cavity of said helmet, and said inhale hose member being secured to the bottom end of said snorkel member through an inhale opening on said helmet; a mouthpiece in connection with said inhale hose member and an exhale hose member, and said mouthpiece having a breathing port that is sized and configured for selective connection with the user's mouth, wherein fluid flow communication is permitted between an inhale port in connection with said inhale hose member and an exhale port in connection with said exhale hose member; a control ember surrounding an inner cavity and having an inlet opening and an outlet opening, and wherein said exhale hose member is in connection with the inlet opening on said control member through an exhale opening on said helmet; an airflow channel formed between the inner channel of said snorkel member, said inhale hose member, said mouthpiece, said exhale hose member, and the inner cavity of said control member; a one-way exhale valve in the inner cavity of said control member, and said one-way exhale valve being structured and disposed for permitting passage therethrough of air that enters the inner cavity at the inlet opening through the one-way exhale valve and through the outlet opening of said control member; and a control valve that is manually operable by the user, and said control valve being structured and disposed for selectively permitting or preventing airflow through the outlet opening on said control member, wherein the user may selectively prevent airflow through the outlet opening in order to inflate the survival suit with air exhaled through the user's nose to facilitate heating and floatation of the user in a body of water, and wherein the user may selectively permit airflow through the outlet opening to deflate the survival suit as air enters the airflow channel through the breathing port on said mouthpiece and passes through the one-way exhale valve and the outlet opening on said control member. |
