Loading system for particulate materials
CA 2098850 C · Owner: Fuller Company · Inventors: Romanchik, Robert E.; Paul, Kermit D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A loading system for light particulate materials. A storage hopper (l2) for granular material includes an airlock (26) by which the material is fed into an air stream. The air and accompanying material are fed to a distribution pipe (24) with multiple flexible downward projecting fill spouts (40) which are spaced at regular intervals, Each spout (40) has an associated control valve and air pressure sensor (56) within the spout (40) so that as a , container being loaded by the spout is filled and the pressure, in the spout increases beyond a preselected level the spout is closed off and , material automatically is transported to the next open spout. Air operated spreader heads (60) may …
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 19, 1991 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2013.
- 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.