Welding power supply housing
CA 2189932 C · Owner: Sigl, Dennis R. · Inventors: Sigl, Dennis R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A housing for a welding power supply, the housing including a main chamber and a tunnel through the main chamber a number of electrical, components mounted on the tunnel a number of heat sinks mounted in the, tunnel in operative engagement with said electrical components a fan mounted , in, the tunnel for blowing air through said tunnel to cool the electrical components, an electrical control board and interconnect board mounted in the main chamber in a spaced relation to said tunnel to isolate the boards from the heat and air flow, through the tunnel.
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
- Filed November 8, 1996 and granted July 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2018.
- 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.