Method of induction heat treating, quenching and tempering of structural members
CA 1108970 A · Owner: Midland Steel Products Co. · Inventors: Satava, George L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure This invention relates to a method of induction heat treating and restraint quenching structural members particularly, those of low carbon alloy steel (lean content) to a uniform, martensitic structure, such that distortion of the member due to rapid quenching is controlled. The members would generally be of a channel shape and they would be heated by induction preheating in several stages to austenitizing temperature namely, 1450° to 1750°F, and then liquid quenching the channel member and restraining the channel on both its web and its flanges to below 900°F to minimize distortion and then tempering the channel at a temperature of 750° to 1000°F and again …
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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
- Granted September 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 1998.
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Timeline
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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.