Strip conveyor and stacker
CA 2178166 C · Owner: Sealey, James H. · Inventors: Sevick, Thomas E.; Colson, Wendell B.; Kovach, Joseph E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A strip conveyor and stacker receives cut elongated flexible strips from a strip former and by conveying and stacking the strips produces a stack of strips such as a cellular panel for a window covering. The conveyor receives the strips from the strip former and includes a foraminous conveyor belt which holds the strips on the surface thereof by suction. At the stacker the, strips are discharged from the conveyor belt by applying a burst of pressurized air, thereby ejecting the strips into a stacker magazine. As the strips are stacked the magazine, is indexed to increase its depth or a cellular structure, formed by the stacked strips is withdrawn from the body of the magazine. An auxiliary …
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 June 4, 1996 and granted November 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2018.
- 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.