Mat covered roll construction
CA 1266815 C · Owner: Goralski, Richard J. · Inventors: Goralski, Richard J.; Beucker, Albert W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A resin impregnated mat covered roll especially useful in the manufacture of coated and glossy grates of paper capable, of withstanding harsh operating conditions high speeds, and high, nip loads, has the cover formed from thin spirally wound layers of resin saturated non-woven fabric presenting a temperature resisting uniform, smooth, long lasting roll surface which will not wear unevenly or create high and low pressure nip areas or contain trapped air bubbles. The fabric of the cover is non-woven non-, needled, light in weight, preferably having a basis weight between one half to two ounces per square yard ant a thickness gauge of between .005 to .020 inches and is wound in ribbon or …
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
- Granted March 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2007.
- 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.