Diving helmet

Details Diving helmet Diving helmet

1991-06-04

1992-11-03

Burr, Edgar S.

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

12820029, B63C 1102

Patent

active

051599236

ABSTRACT:
A diving helmet comprises a transparent front window and an air supply chamber at the back. The air supplied from a ship on the water is fed into the helmet through the air supply chamber. The air in the air supply chamber is partially fed to diver's mouth through an air hole formed in the wall of the helmet, thereby preventing the front window from getting misted. The air supply chamber is made as a box separately from the helmet and is embedded therein.

REFERENCES:
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patent: 1209224 (1916-12-01), Stelzner et al.
patent: 1935132 (1933-11-01), Serimgeour
patent: 2693180 (1954-11-01), Galezzi
patent: 2988749 (1961-06-01), Crouzet
patent: 3172126 (1965-03-01), Spano et al.
patent: 3308814 (1967-03-01), Wilson
patent: 3364616 (1968-01-01), Speers
patent: 3474782 (1969-10-01), Cupp
patent: 3568672 (1971-03-01), Cupp
patent: 4137912 (1979-02-01), O'Neill
patent: 4527658 (1985-07-01), Payne

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