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. 20, 1988
Filed:
Nov. 17, 1986
Hans-Joachim Walther, Lubeck, DE;
Dragerwerk AG, , DE;
Abstract
Gas masks each with a protective hood according to the invention are used as rescue equipment, e.g. escape equipment. For this purpose, they must be available when needed in a fail-safe condition and then untrained persons must be able to apply and use them. The gas mask has in its protective hood portion a breathing attachment in form of a half mask. On the outside, the breathing attachment supports a plug-in frame which is open at opposite sides or ends and accommodates a breathing filter inserted therein through one of the open ends or sides. Respiration takes place through the inlet walls of the frame and the filter. The used-up breathing filter is replaced by inserting a replacement filter. The simple insertion or replacement of the breathing filter makes training of untrained persons possible by using training filters.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile