Composite threshold assembly for a molten glass delivery apparatus
CA 1086061 A · Owner: Ppg Industries, Inc. · Inventors: Tilton, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A glass delivery facility connecting a glassmaking furnace with a molten metal-containing glass forming chamber employs a threshold assembly having a front face base block having a foot which extends downstream from the threshold-molten metal interface beneath the molten metal and having a transverse subsurface gap for directing gases from the molten metal to the sides of delivery facility so that gas bubbles are removed to avoid deformation of the underside of flat glass being produced.
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 September 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 1997.
- 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.