Hydrostatic self-loading controlled deflection roll
CA 2197665 C · Owner: Beloit Technologies, Inc. · Inventors: Brown, Dale A.; Roerig, Arnold J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydrostatic self-loading controlled deflection roll has a central hydraulically operated shoe which extends substantially the entire cross-machine width of the rotating roll shell (1) and two outboard shoes (24, 26, 28, 30) disposed in the cross-machine direction, outside of the nip loading zone. The use of the outboard shoes (24 26, 28, 30) permits the use of a single full-length nip shoe (3) within the nip loading zone which simplifies control and provides for more uniform temperature distribution. The outboard shoes (24 26, 28,30) also provide better crown control. The outboard shoes (24 26, 28, 30) are preferably disposed within a head flange (17 18) area of the roll, at the location …
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 August 10, 1995 and granted October 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2017.
- 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.