Vibrator type concrete pipe making machines having combined lubrication and cooling system and method of operation thereof
CA 1320337 C · Owner: Grau, Thomas D. · Inventors: Grau, Thomas D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vibrating type concrete pipe making machine and a, method of vibrating dry cast concrete products in which very, high frequencies of vibration and large inputs may be attained without excessive wear on the mold or shortened bearing life. It also includes lubricant and coolant systems which are combined into a single system.
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 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 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.