Abstract: A heat protection garment comprises one or more manifolds connected to one or more headers by a plurality of parallel extending coolant tubes. The manifolds and headers are similar and both include mixing chambers to which the coolant tubes are connected. Coolant supply and discharge conduits are connected to the manifolds and headers respectively with connecting pieces extending across the mixing chambers between the coolant tubes and the conduits, in a plurality of rows. The ratio between the spacing of the parallel rows to the length of each of the connecting pieces to the distance between each of the connecting pieces in each of the rows is approximately smaller or equal to 1:3:1 and the number of coolant tubes to the number of rows of connecting pieces to the number of conduits connected to each mixing chamber is smaller than or equal to about 12:3:1.

Abstract: In a gas tight receptacle, particularly for an emergency respirator, a safety lock is disclosed which comprises an eyelet or slotway in a bottom and cover part of the receptacle. Both eyelets or slotways are engaged in a fixed manner by elastic tongues of a locking member. The locking member has a weakened portion in the area of the seal so that it can be broken to permit the full opening of the receptacle.

Abstract: An oxygen respirator container for an oxygen releasing chemical cartridge comprises a cylindrical bottom part having a bottom wall and an interior side wall with a plurality of spaced apart raised ribs with a recess between adjacent ribs. An oxygen generating cartridge is disposed in the bottom part on the bottom wall and over the ribs of the side wall and at least one holding element is disposed in the recess between adjacent ribs between the side wall in the container. The holding element has a top head portion which projects outwardly from the holding element into the bottom part and overlies the top edge of the cartridge so that it holds the cartridge over the bottom wall. The side wall of the container also includes an indented part adjacent the top of the cartridge with a top ledge of the indented part defining a holding nose. The holding element has a deflectable tab portion which engages in the indented part under the nose.

Abstract: A pressure gas operated pump, comprises, a housing which has two spaced apart double pump chambers, with diaphragms stretched across each pump chamber so as to define a driving fluid chamber and a pump fluid chamber and a rigid coupling interconnects the diaphragms. There are valve inlet and outlet passages connected into the respective pump fluid chambers for handling the pump fluid during the movement of the diaphragm. A control valve is mounted in a control valve chamber, and it is connected to the fixed coupling by means of a bar spring which has its center portion fulcrummed on a contact with the wall of a bore through a transverse thin member of the housing. The driving gas is directed onto the valve chamber and it flows through the center of the valve member and, depending upon the position of the valve, which is regulated by the diaphragm, it will flow into respective ones of the two driving fluid chambers.