The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 1985
Filed:
Apr. 05, 1984
Fernand J Dechene, New Britain, CT (US);
VBM Corporation, Louisville, KY (US);
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.