Breathing mask

Details Breathing mask Breathing mask

1987-03-27

1989-05-23

Coven, Edward M.

Surgery

Respiratory method or device

Means for removing substance from respiratory gas

12820621, 12820628, A62B 710

Patent

active

048320170

ABSTRACT:
A breathing mask has an elastic molded body which has area zones of materials of different hardnesses. This breathing mask is improved such that even with a one-piece molded configuration of the breathing mask, area zones of different hardness and constant wall thickness are provided. For this purpose, area zones integrated into the molded body are reinforced differently by means of a partial heat treatment.

REFERENCES:
patent: 1127612 (1915-02-01), Furtaw
patent: 1142990 (1915-06-01), Stern
patent: 2070754 (1937-02-01), Schwartz
patent: 2281181 (1942-04-01), Clarke
patent: 4126131 (1978-11-01), Davis et al.
patent: 4337767 (1982-07-01), Yahata
patent: 4454881 (1984-06-01), Huber et al.
patent: 4573463 (1986-03-01), Hall
Hubner-Gummi Und Kunststoff-GmbH, "Strahlen Ver-Netzte Formteile Aus PVC".
Rompps Chemie-Lexikon.
Tetzlaff, "Thermisch Vernetztes Polysulfon", 1986.

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