Diameter and lateral position sensitive nip pressure controls in a paper winding system
CA 2128533 C · Owner: Frye, Kenneth G. · Inventors: Gangemi, Donald; Olshansky, Alexis; Fitzpatrick, Donald C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rider roll system for exerting, an even nip load force along the surface of a roll of paper (24, 324) being wound from a continuous on-coming web (W), in a winder comprises a plurality of rider roll wheel elements (30a, 30b, 30c,... 330) each of which is connected, to a common source (76 376) of hydraulic, pressure to provide the same rolling nip force against the wound paper roll (24, 324). The rider roll wheel, elements (30a 30b, 30c,... 330) are, mounted to a beam (22 322) which is, translationally movable above the wound paper roll (24, 324). The beam, (22 322) and individual rider roll wheel, elements (30a 30b, 30c,... 330) are, moved upwardly as a function of the increase in the …
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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 26, 1993 and granted January 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 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.