Respiratory device for catastrophic fires and/or smog weather conditions

US4297117A · kind A · utility

Assignee

• Industrie-Wert Beteiligungsgesellschaft mbH · DE

Inventors

• Heinz Holter
• Heinz Gresch · Wickede (Ruhr), DE
• Heinrich Igelbuscher

Key dates

• Filing date: Jun 19, 1979
• Grant date: Oct 27, 1981
• Expiry date: Jun 19, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S55/35
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A fireproof respiratory face mask for use in fires and smog has a granular expanded calcium aluminum silicate base material coated with layers of soda lime, active carbon dust, copper dust soaked into a caustic soda solution and manganese dioxide dust held between two layers of ceramic fiber fleece-like materials felted together to hold the coated granules. The face mask is stored in an easy opening ceramic fiber fireproof package with a pair of fireproof gloves.