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. 16, 1999
Filed:
Feb. 05, 1998
Applicant:
Inventors:
David Mark Stuart, Elstead, GB;
John Robert Coates, Farnham, GB;
Assignee:
The BOC Group plc, Windlesham, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
96114 ; 96122 ; 96130 ; 96144 ;
Abstract
A vacuum swing adsorption apparatus for separating a gas mixture includes a pipeline along which the vacuum is able to be drawn. The apparatus is provided with a plurality of eductors each connected to the pipeline 6 and in parallel with the other eductor respective stop valves. The stop valves are arranged and operable so as to select the number of eductors in communication with the pipeline. Thus the degree of vacuum to which the apparatus is subjected may be varied.