The present invention provides an underwater breathing device. The device comprises a canister having a pump installed therein, wherein air outside of the canister communicates with the interior of the canister via the pump; a mouthpiece; and an elongate tube interconnecting the interior of the canister and the mouthpiece. Methods of making and using the device are also disclosed.
UNDERWATER BREATHING DEVICE
2022-03-17
Patent
Electronic Resource
English
IPC: | B63C LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS , Zuwasserlassen, Trockenstellen, Docken oder Bergen von Schiffen |