Process of making brake rotors
CA 2352238 A1 · Owner: Waupaca Foundry, Inc. · Inventors: Miskinis, Gregory V.; Reierson, Scott
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for casting dimensionally predictable brake rotors is provided. The apparatus includes a first mold portion (12) or cope/ram half, and a second mold portion (16) or drag/swing half, movable relative to each other. The first mold portion (12) and the second mold portion (16) define a mold cavity (14) for casting the brake rotor (24). A fin core (20) is then provided and positioned in the mold cavity (14) for forming a plurality of cooling fins on the brake rotor (24). The fin core (20) is made of a silica sand and carbon sand mixture, wherein the carbon sand is a crushed calcined petroleum coke.
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 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2021.
- 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.