Molding process and die
CA 1304901 C · Owner: Phillips Petroleum Company · Inventors: Mills, Stuart D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
32476CA, Abstract of the Disclosure, A tongue-in-groove die and process for its use are provided herein. The tongue-in-groove die includes a first mold half having a groove and a second mold half having a tongue which is juxtaposed with respect to the first mold half to define a wedge-shaped passage having an inlet and outlet, between the tongue and groove. At least one roving of long fibers carrying a dispersion of thermoplastic resin can be pulled through the wedge-shaped passage to consolidate the resin and form a tape while at the same time the, inlet and outlet clearances between the tongue and groove are adjusted to thereby adjust the pressure on the roving(s).
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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 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.