Abstract: A molecular sieve material, preferably zeolite, is provided in a suitable binder and in sterilized form such that it can be applied directly to an open wound. The wound or opening to be treated is completely covered in order to achieve the best results.

Abstract: An absorption-type oxygen generating system is disclosed in which the nitrogen components of compressed air passing through an absorption bed is absorbed, leaving a relatively pure oxygen effluent. Regeneration of the bed is provided by depressurizing the bed and recirculating a portion of the oxygen effluent to release the nitrogen previously absorbed therein. A flow divider has two branches each providing fixed orifice therein. One branch delivers a fixed percentage of the effluent to a depressurized absorption bed for regeneration thereof. The other branch delivers the remaining effluent to a storage tank. A pressure regulating valve is provided in the second branch to maintain a constant pressure differential across the orifice of the second branch so that a constant percentage of the oxygen effluent is delivered to the storage tank regardless of the back pressure existing in such tank.

Abstract: A gas fractioning apparatus includes a housing (A) in which various gas separation components and modules are located. A gas distribution module (B) which includes components for handling and distributing incoming gas to be separated is mechanically mountable within the housing. A control module (C) which includes the appropriate control components for controlling the gas separation is similarly mountable within the housing. An oxygen outlet assembly (D) which includes the fluid handling components for handling the separated oxygen is mounted with the control module in the housing. A bed module (E) which physically separates oxygen from other air components is mechanically mountable within the housing. A mechanical mounting assembly (F) removably mounts the modules within the housing. An electrical connection assembly (G) provides electrical connection between the electrical components of at least the control and distribution modules.

Abstract: A first compressor (10) supplies atmospheric air or other gaseous mixtures to a crossover valve (20) at a first relatively low pressure, e.g., 15-18 psi. The crossover valve alternately supplies the atmospheric air to a first molecular sieve bed (22) and a second molecular sieve bed (24) while simultaneously permitting the other molecular sieve bed to discharge adsorbed gaseous components of atmospheric air through a waste gas discharge port (26). A second compressor (40) draws the oxygen which passes through the molecular sieve beds without being adsorbed through a restrictor (60) and a needle valve (62). The restrictor and needle valve are selected and adjusted such that an oxygen pressure of about 2-6 psi is maintained upstream of at least the needle valve. The second compressor increases the pressure of the oxygen to at least 45 psi and pumps it into a storage tank (46) from which it may be supplied to welding or other industrial equipment.