Minimum friction cylindrical and/or tapered roller bearings
CA 2107176 A1 · Owner: Sanchez Sanchez, Felix · Inventors: Sanchez Sanchez, Felix
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Summary (preferentially Figure 1) Minimum friction tapered or cylindrical roller bearings Minimum friction, tapered or cylindrical roller bearings consisting of rollers (3) having two or more different diameters (d / d1 / d2 / d3) leaning on and rolling over the raceway inner (2) and outer (1) rings, and having equality relationships between them; that is to say, the relationship between the outer raceway diameter (D1) and the supporting roller diameter (d1) keeps the same proportion to that of the inner raceway diameter (D) with the leaning and rolling roller diameter (d) so that, the peripheric speed developed by the roller (3) is the same both for the outer raceway ring (1) and the inner …
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 September 28, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2015.
- 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.