US 4,359,048 AGranted

Automatically startable oxygen rescue device

AssigneeBanyaszati Aknamelyito Vallalat

InventorsIstvan Almasi, Ferenc Kassai, Laszlo Nyeste

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Abstract

The invention relates to an automatically operating oxygen rescue apparatus whose case consists of a housing portion and a cover attached thereto, with the case holding an oxygen bottle, a regeneration cartridge, an oxygen metering valve system, and a breathing tube, with the housing portion having an impact device whose impact head can be made to contact the surface of the cover; the movable part of the impact device is operatively connected to the oxygen valve or to a valve on the oxygen bottle. The oxygen metering valve system contains lines for constant oxygen metering, automatic metering by a regulator and supplemental metering, all of which discharge into a breathing tube. With the rescue apparatus of the invention, the impact device can be started with a single motion. Actuating the impact device causes not only the case to open, but also the release of oxygen. The triple oxygen metering is adapted to the needs of the escaping person and can secure optimum air supply during escape from disaster.

Claims6

Dependent claims

An automatic portable breathing apparatus comprising:

a housing;
a cover hinged to said housing and swingable between a closed position wherein said cover defines an enclosure with said housing, and an open position;
an oxygen bottle mounted in said housing;
an alkali filter mounted in said housing;
an air bag contained in said enclosure and communicating with said filter;
a breathing tube contained in said enclosure and communicating with said oxygen bottle and said filter;
a stop valve in said housing between said oxygen bottle and said breathing tube and said filter;
catch means mounted in said housing and engageable with said cover for maintaining same in said closed position;
a force storing device mounted in said housing including means adapted to release a force and operatively connected to said stop valve for opening same upon release of said force, said device also being positioned to engage and drive open said cover upon release of said force for allowing access to said breathing tube and expansion of said air bag;
and
trigger means operatively connected to said catch means and said force storing device for releasing same.

8 more elements

Dependencies are inferred from the claim text.