Method of preparing and coating aluminum cylinger bores
CA 2210061 A1 · Owner: Ford Motor Company · Inventors: Palazzolo, Christopher; Shepley, Barry; Rao, Vemulapalli
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating a light metal cylinder bore wall to adherently receive a thermally sprayed metallic coating, that comprises (a) honing the wall to produce a net cylinder shape surface by use of spiral overlapping cross-abrasions having certain peaks and valleys of the abrasions folded over and molded to create tears, folds and undercuts rendering a hook and ladder effect, the honing being carried out with the use of a machining coolant to prevent burnishing of the walls; (b) either concurrently or shortly after step (a) washing, the honed surface with a hot alkaline solution comprising (i) a non-soaping aluminate forming agent (sodium xanthate) that produces a residue on the walls and …
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 July 10, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2019.
- 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.