Emergency breathing device for miners
CA 1315174 C · Owner: Fantin, Patrick W. J. · Inventors: Fantin, Patrick W. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel two-part emergency breathing system is provided herein. The first or fixed part includes a source of air under pressure, a shut-off valve connected to that source of air the, shut-off valve leading to an air filter and the air filter, leading through a pressure regulator to a distribution system including a plurality of quick connect/disconnect couplings. The second or portable part includes a mask having an inlet line therein, terminating in a quick/connect disconnect coupling the, mask including an eyeshield of transparent material and a one-way exhaust valve adjacent the nose and/or mouth of the wearer of the mask.
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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.