Method and apparatus for bottom loading a pneumatic transport pressure vessel
CA 2012610 C · Owner: Lybecker, G. Wayne · Inventors: Lybecker, G. Wayne; Sherrow, Timothy Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The pneumatic conveying system according to the present invention includes a pneumatic transport pressure vessel having funnel-shaped sides and a closed domed top. The pneumatic transport pressure vessel has a single inlet/outlet opening at the bottom of the funnel-shaped sides. The pneumatic transport pressure vessel is connected to a switch valve having a pipe section movable between first and second positions. In the first position the switch, valve connects the pneumatic transport pressure vessel to a positive displacement mechanical feeder to bottom load material from a storage hopper through the switch valve into the pneumatic transport pressure vessel. In the second position, the …
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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 March 20, 1990 and granted January 4, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 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.