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:
Jun. 11, 1991
Filed:
Oct. 21, 1988
Applicant:
Inventor:
Johannes Heckmann, Lubeck, DE;
Assignee:
Dragerwerk Aktiengesellschaft, Lubeck, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
422 83 ; 422 58 ; 422103 ; 436902 ; 73188 ; 252305 ;
Abstract
The invention is directed to a flow tester for air wherein at least two different materials are accommodated in at least two supply chambers. A visible aerosol is formed when the materials are mixed. The flow tester is improved with respect to an optimal adjustment of the mixing ratio of the components as well as providing a reduction of the flow resistance. The flow tester includes at least two supply chambers which are connected in parallel with respect to the flow therethrough.