Welder's hood with air filter
CA 1072251 A · Owner: Morris, Lois A. · Inventors: Morris, Lois A.; Morris, Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification describes a protective mask for use by welders comprising; a front shield portion having eye protection glass thereon, side members extending from the front shield portion, headgear means pivotally supporting the side members, means for protecting the breathing system of a welder from fumes and gases of the hazardous type being emitted from welding rods during the welding process the, means for protecting the breathing system of a welder includes replaceable filter structure mounted on the face mask a face-, engaging mask for an air-tight seal with the welder's face about the nose and mouth, an exhaust air flutter valve mounted on the face mask, the replaceable filter …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 26, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.