Welding mask lens spring and flash barrier
CA 1282902 C · Owner: Fibre-Metal Products Co. (The) · Inventors: Ruck, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a welding mask assembly a shield section having a viewing, port defined by a peripheral frame; a lens pack mounted in the port; a cover member; and cooperating locking elements between the cover member and the frame. The cover member operates between a locked position supporting the lens pack in the port and a released position permitting removal of the lens pack upon lateral movement of the cover member relative to the frame in only one predetermined plane. A spring element normally biases the cover member away from the plane.
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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
- 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.