Damperless controlled speed air conveyor
CA 2197002 C · Owner: Lenhart, Ronald A. · Inventors: Lenhart, Ronald A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A damperless, controlled speed, coverless isometric air conveyor (10) and , method for conveying lightweight containers (16) en masse or individually at a controlled speed is provided. A first set of louvers (14) extend through a conveyor surface from a common plenum at an incline to a conveying surface so that the air passing through the louvers (14) has a downstream force vector of a first magnitude. A second set of louvers (14) extend through the conveyor surface from the common plenum at an incline to the conveyor surface so that the air passing through the louvers has an upstream force vector of a second magnitude which is less than the first magnitude thereby creating a vector …
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 November 22, 1995 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2017.
- 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.