Cement mixing process and apparatus
CA 1214457 A · Owner: Alslur Enterprises Limited · Inventors: Delorme, Ernest J.; Brown, Ronald O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel apparatus and process for producing cement slurry on a batch basis is disclosed. During the charging of a slurry batcher with water and cement, the cement dust so produced is captured and added back to the slurry being batched in order to minimize health and environmental hazards created by the cement dust. This is achieved by passing or venting entrapped air and dust in the batcher through air vent and cement dust collection means which in one embodiment comprises a water reservoir through which the air and dust passes. Dust is captured by the reservoir water and the reservoir water then discharged into the batcher so as to become part of the slurry batch with known and …
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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 November 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 2003.
- 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.