Bearing control system for a roll with hydrostatic bearings
CA 2249380 C · Owner: Holopainen, Kari · Inventors: Holopainen, Kari; Kivioja, Pekka; Nokelainen, Vesa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a bearing control system for a roll with hydrostatic bearings, which roll is mounted from its axle (3) on a bearing block or on an equivalent frame member by means of a number of hydraulically loaded hydrostatic bearing elements (10, 20, 30). At least one bearing element is a so-called principal bearing element (10) which acts in the principal loading , direction and one bearing element is a so-called backup bearing element (20) which acts in the direction opposite to the principal loading direction. The bearing elements are provided with bearing shoes positioned freely around the neck of the roll axle (3) in order to support said axle (3) and thus, the , roll …
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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
- Filed January 28, 1998 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2020.
- 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.