Sintered plain bearing with continual variation of the bore densification
CA 2519005 C · Owner: Gkn Sinter Metals Gmbh · Inventors: Messner, Christina; Stehr, Werner; Kronbichler, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a porous plain bearing (5) for engines and gearboxes comprising a circular borehole (14) provided with highly compressed at least , approximately closed-pore regions (9) and low-compressed open-pore regions , (10) which are alternately distributed over the circumference the borehole , diameter of the highly compressed and low-compressed regions (9 10) being at , least approximately identical. The invention also relates to a method and a device for the production of said porous plain bearing.
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 March 17, 2004 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2026.
- 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.