Production of high density powdered metal parts
CA 1059344 A · Owner: Borg-Warner Corporation · Inventors: Zambrow, John L.; Feng, Louis T.; Hempel, Rudolf M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process of forming powdered metal into finished or near-finished, high-strength, structural parts of complex configurations wherein a metal powder preform is heated to a temperature of approximately 2100°F and formed at relatively low pressures in the range of approximately 19 to 39 tons per square inch over a short contact time interval in a preheated forming die composed of a high temperature high strength, superalloy to produce a metal part having a density of 99% or greater of theoretical density. The preform is formed from a prealloyed metal powder blended with graphite and a lubricant, compacted to a density in the range of 70 to 80% of theoretical density, and heat treated for …
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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 July 31, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 31, 1996.
- 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.