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, 1993
Filed:
Apr. 14, 1992
Werner Jumpertz, Lubeck, DE;
Werner Sartor, Lubeck, DE;
Dragerwerk Aktiengesellschaft, Lubeck, DE;
Abstract
An air-cleaning cartridge for treating respiration air with a chemical as a packing, whose housing wall consists at least partially of an expandable, elastic material, is to be improved such that the size can be increased in a controlled manner prior to filling with the chemical, in order to achieve a reproducible contracting force of the expanded housing and in order to prolong the ready-to-use storage time of the cartridge. To achieve this, a pressure connection 7, through which a compressed gas can be introduced into the housing designed as a film bag 1, 1' in order to expand it to a predetermined volume, can be connected to one of the connections 2. The chemical 5 is filled from the filling chamber 3 into the pressurized, expanded film bag 1. After releasing the internal pressure into the atmosphere, the film bag tightly surrounds the packing introduced on all sides (Figure).