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:
Sep. 14, 1982
Filed:
Aug. 04, 1980
B.A.T. Cigaretten-Fabriken GmbH, Hamburg, DE;
Abstract
An apparatus for determining the effect of dilution and/or diffusion of the gaseous components of a gas flow passing through a gas permeable test object is claimed. The apparatus comprises a source of calibrating gas, a laminar resistance coupled to the source of calibrating gas with the gas flowing through the laminar resistance, and a volumeter is coupled to the laminar resistance for measuring the volume of gas flowing therethrough. The gas from the laminar resistance flows through the test object to a gas concentration measuring device for receiving and for measuring the concentration thereof. A bypass device is provided for bypassing the flow of gas around the test object, and a suction device draws gas from the source to the measuring device.