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:
Jan. 25, 1977
Filed:
Aug. 14, 1975
James Donald Byrne, San Diego, CA (US);
Paul Arthur Griffith, Fallbrook, CA (US);
Monitor Labs, Incorporated, San Diego, CA (US);
Abstract
A mass exchange device and system that employs a semi-permeable diffusion barrier in the nature of a tubular membrane. A sample gas stream conduit is concentric with the tubular membrane, and the transport gas stream flows within the tubular membrane in a direction opposite to the flow of transport gas stream. Certain molecular species in the sample gas migrate across the tubular membrane and mix with the transport gas for passage to an analyzer. The conduit and tubular membranes are incorporated within a heat exchange cartridge and a heater and temperature controller maintain a desired temperature control of the system. Dual stream dilutions may be accomplished by sampling an exhaust gas prior to cleansing by a gas scrubber and also sampling the gas after cleansing. Both the upstream and downstream sample gases are diluted in a common heat exchange cartridge and passed to an analyzer.