Surgery – Respiratory method or device
Patent
1988-01-05
1989-07-18
Hindenburg, Max
Surgery
Respiratory method or device
12820123, 12820624, A62B 712
Patent
active
048483303
ABSTRACT:
An improved respirator system which protects the head of the operator while allowing excellent visibility and improved breathing conditions in a contaminated environment is disclosed. The system includes a hose mask with facepiece having a lens which provides improved visibility to both sides, as well as above and below the operator. The facepiece is provided with a seal around the head portion of the wearer with connection through a suitable hose ventilating system to a source of uncontaminated air at atmospheric pressure. The respirator is of the class B type, in which air is brought into the lungs from a source of uncontaminated air at ambient conditions through the bodily breathing function of the operator alone, without the use of an air compressor or a supply of compressed air.
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patent: 3955570 (1976-05-01), Hutter
patent: 4055173 (1977-10-01), Knab
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patent: 4440163 (1984-04-01), Spergel
patent: 4534344 (1985-08-01), Constance-Hughes
patent: 4651727 (1987-03-01), Howorth
Hindenburg Max
Lacyk John P.
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