Automatic particle transport system
CA 2076552 C · Owner: Littman, Howard · Inventors: Morgan, Morris H. Iii; Littman, Howard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system is disclosed for transporting solid particles having a size range from 1/10 micron to 22 mm. in diameter including a feed hopper formed of an inverted cone frustum a, cylindrical tube, and an inverted cone a source of solid, particles contained in the feed hopper a transport pipe, inserted into the feed hopper coaxially with the axis of the feed hopper, fluid introducing pipes for introducing fluid such as air into the bottom of the feed hopper including a spout inlet feed pipe at the apex of the inverted cone and coaxially located opposite the transport pipe and forming an adjustable gap between the bottom of the transport pipe and the top of the spout inlet pipe, and at least one …
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 August 6, 1992 and granted March 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2014.
- 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.