Apparatus and method of conditioning and conveying thermoplastic material
CA 1189555 A · Owner: Corning Glass Works · Inventors: Boettner, George B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus is disclosed for conducting relatively hot molten thermoplastic material from a furnace and delivering the material at a desired homogeneity to a remote location. The apparatus includes a conduit means having an inlet adapted to receive the material at one end from the furnace and an outlet for delivering same to the remote location. There may also be provided a flow control device in flow communication with the outlet of the conduit means for regulating the flow of the thermoplastic material from the furnace at a controlled rate and head. A refractory structure located in spaced relation about the conduit means and flow control device defines a space thereabout for 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
- Granted June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
- 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.