Dragerwerk Aktiengesellschaft

William S McBride

Gerd Pantaleon-Stemberg

A starting device for a chemical oxygen generator comprises a casing which has a chemical oxygen generating material therein and with a first wall above the material with an opening bounded by an annular sealing face and an opposite second wall below the oxygen generating material with at least one passage for the passage therethrough of an oxygen which is generated. A liquid ampule is disposed above the oxygen generating material and a thrust bolt is mounted in the opening of the casing over the liquid ampule and is movable when actuated from a starting position overlying and spaced from the ampule to an actuated position in which it penetrates and breaks the ampule. The coil spring is associated with the bolt and it biases the bolt in a direction toward the ampule. A sealing ring is disposed around the bolt and is located initially above the opening and moves with the bolt to engage into the opening and seal the top of the container when the bolt is in the actuated position.

Starting device for a chemical oxygen generator

A method of manufacturing a chemical oxygen generator using two plates and a chemical substance which produces oxygen through a chemical reaction and an isostatic pressing device, comprising, forming at least one depression between two flat portions of each plate, placing the plates together by superimposing their flat surfaces together in the isostatic press, and arranging their depressions so that they oppose each other, and filling the depressions with the chemical by inserting the chemical axially into the depression and deforming the plates by pressing the pressing device to close the depressions along the flat surfaces at each end and to compress the chemical within the depressions. The invention construction advantageously includes plates having two sets of depressions or one continuous serpentine depression in each plate, which are arranged in mirror orientation and closed at one end and contain an ignition device for the chemical at the opposite end.

Method of manufacturing a chemical oxygen generator and a chemical

A chemical oxygen generator using a chemical which generates oxygen by thermal reaction and an ignition device for the chemical is made by forming a continuous depression in a first plate, filling the plate depression with the chemical so as to completely fill the depression or to slightly overflow it, locating the ignition device in the depression adjacent one end thereof and covering the first plate with a second flat plate and pressing the two plates together to compact the chemical and deform the depression of the first plate. The plates are subsequently secured together with a gas-tight connection around the depression. The generator advantageously comprises a continuous serpentine-like depression in one plate and has a closed end located in the plate and an open end extending to the edge of the plate which may be sealed by a foil when the two plates are pressed together. The ignition device is located adjacent the open end and it may be activated to cause the production of the oxygen from the open end successively to the closed end.

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Lubeck, Germany

William S McBride