Plug screw feeder
CA 1309962 C · Owner: Kvaerner Hymac, Inc. · Inventors: Eccelston, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
John Ecclestone, ABSTRACT OF THE DISCLOSURE An improved plug screw feeder for removing excess fluid from materials or for refining materials having an inlet for materials and at least one outlet, the improvement comprising means to feed material under pressure into the inlet of the plug screw feeder. -13-
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
- Granted November 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 2009.
- 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.