Roller caliper gauge
CA 1283284 C · Owner: Mccurdy, Donald J. · Inventors: Riggin, Michael T.; Mccurdy, Donald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roller caliper gauge for providing an accurate measurement of the thickness of a high speed web of paper or the like in which a proximity device located within a housing disposed between a pair of rollers on a head on one side of the web is responsive to a web in an operative position adjacent to the housing. A platen on a head on the other side of the housing is pneumatically moved toward the rollers to cause the web to make line contact with the rollers when in the operative position.
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 April 23, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 23, 2008.
- 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.