In-line rotary inserter
CA 2367823 C · Owner: Bell & Howell Phillipsburg Company · Inventors: Hawkes, Richard B.; Nyffenegger, David P.; Lee, James S. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary feeder module for feeding sheet inserts and having a thickness detector for measuring the thickness of moving inserts. The feeder includes a gripper drum disc for transporting the inserts and a detector caliper assembly having a follower roller that rides upon and along the periphery of upon moving inserts transported upon the periphery of the gripper drum disc. The feeder also includes a mechanism for sensing the field of a magnet to provide a measure of relative displacement between the sensor and the magnet and thereby a measure of the radius of the periphery from an axis of rotation. The sensory mechanism provides reference signals corresponding to zero thickness of the inserts …
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 April 12, 1990 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2012.
- 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.