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:
Dec. 31, 1991
Filed:
Sep. 16, 1988
Applicant:
Inventors:
Richard E Layng, Canton Township, MI (US);
Linda Deschere, Farmington Hills, MI (US);
Gunther J Evanina, Southfield, MI (US);
Purnachandra G Pai, Birmingham, MI (US);
Assignee:
Michigan Consolidated Gas Company, Detroit, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01L / ;
U.S. Cl.
CPC ...
422 99 ; 137896 ; 137897 ; 73 1901 ; 366101 ; 366177 ; 366182 ;
Abstract
Accordingly, the present invention is an apparatus for mixing gas and air to obtain a plurality of predetermined gas-air concentrations including means for supplying gas from a constant pressure gas source. A conduit has a first end connected to the supplying means and a second end connected to a means for diffusing air with the gas to obtain a predetermined gas-air concentration.