Method and apparatus for lubricating molten glass forming molds
CA 2428950 A1 · Owner: Burton, Robert L. · Inventors: Burton, Robert L.; Scott, Garrett L.; Newsom, Daniel L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A burner (16, 116, 216) of a surface-mixing type receives a carbonaceous fuel, for example, an acetylene-based fuel from a fuel line, (20) and an oxidant, such as relatively pure oxygen from an oxidant line, (18), the oxidant being supplied to the burner at a rate insufficient to result in, complete combustion of the fuel to thereby produced a sooty flame that is useful in applying lubricating soot particles to a molten glass contacting surface of a glass manufacturing machine. The burner which is, intermittently operated by a solenoid valve (38) in the oxidant line and by a solenoid valve (40) in the fuel line, has a fuel inlet passage (60) that extends, along a longitudinal central axis …
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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 May 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2025.
- 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.