Process of forming a continuous wall in the ground
CA 1185441 A · Owner: Piccagli, Ugo · Inventors: Piccagli, Ugo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of constructing an impermeable wall in the ground is disclosed. The method utilizes prefabricated panels and does not require the same thickness of wall as normally has to be cast in a trench. The method comprises the steps of excavating a trench having a defined width replacing excavated material with bentonite water slurry placing interlocking, prefabricated concrete panels in the trench, the panels having a thickness less than the width of the trench, one side of the panels resting against one side of the trench, placing guides in the trench between the other side of the panels and the other side of the trench to hold the panels upright and against the one side of the trench, …
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 April 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2002.
- 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.