Dryer for drying extrudable materials
CA 1281184 C · Owner: Japan Butyl Company Limited · Inventors: Takahashi, Kenichi; Shogenji, Toshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dryer for drying extrudable materials characterized in that a worm is rotatably disposed in a tubular sleeve which is equipped at its front portion with a hopper to supply extrudable materials said worm, being supported at its both ends by bearings in the sleeve or outside the sleeve, a seal screw is formed around the rear portion of said worm, and an outlet for discharging the extrudable materials is formed on the side surface of the sleeve near the end of the seal screw, said end being connected with a flushing ring which is protruded from the end of the worm.
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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
- 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.