Apparatus and method for producing glass spheres
CA 1048218 A · Owner: Potters Industries · Inventors: Von Irgens-Bergh, Ib
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for producing glass beads or other spherical particles which includes an open-top rotary receptacle for receiving a free falling molten stream. The receptacle is rotated at a carefully controlled speed to maintain the molten material in continuous contact with the upstanding side wall of the receptable. A series of capillary orifices extend radially from the side wall in a single plane, and each of these orifices has a cross-sectional area which is substantially equal to that of the spheres to be produced. As the receptacle rotates, the molten material completely covers the entrance openings of the orifices and is discharged therefrom into the atmosphere under …
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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
- 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.