Method and apparatus for pulverizing material
CA 1315253 C · Owner: Ganse, Akira · Inventors: Nakano, Mamoru; Ihara, Yoshitaka; Ikebuchi, Iwao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and a process for pulverizing a material by friction with a pulverizing medium such as steel balls by rotating a screw shaft rotatably mounted in a shell. A plurality of screw shafts are used for more efficient pulverization. A disc having its lower surface in the form of an inverted cone is secured to the screw shaft to avoid runout. A partitioning plate is provided between each pair of the adjacent screw shafts and formed with one or two holes to allow communication between the chambers formed by the partitioning plates. This assures that the material is discharged after fully pulverized.
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 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.