Transfer chambers for the conveyor in a pneumatic transport system
CA 2047172 A1 · Owner: Brannstrom, Roine · Inventors: Brannstrom, Roine
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pneumatic transport system for transferring particulate material from a first pressurized container to a second container which is under a lower pressure while successively reducing the pressure, comprising a number of parallel tubes (36), arranged in series, said tubes being joined together at their ends by means of transfer chambers (38) for transferring a gas/material stream from an upstream tube (36) to a downstream tube (36). The tubes (36) are joined to the transfer chambers (38) by hexagonal flanges (58, 60). This design of the flange makes possible a compact construction of a discharge device which may be used as a cooler for the transported material. (Figure 3)
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 January 12, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 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.