Belt dewrinkling and alignment method and apparatus
CA 1095840 A · Owner: Envirotech Corporation · Inventors: Davis, Steven S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In combination with a filtration machine of the type employing an endless belt of filter medium without beads on either of its edges a pair of devices for aligning and dewrinkling the belt. Each of the aligning and dewrinkling devices includes a rigidly-mounted arm and a first cylindrical roller extending from the arm beneath the adjacent edge of the belt of filter medium. Also each of the aligning and dewrinkling devices includes a second arm pivotable connected to the first arm and a second cylindrical roller extending from the second arm above the adjacent edge or the belt of filter medium so that a long nip line is defined between the rollers. A spring is connected between the ends of …
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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
- Granted February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 1998.
- 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.