Joint and extension member of a shaft of a pile or earth anchor
CA 1285783 C · Owner: Skogberg, Bo T. · Inventors: Skogberg, Bo T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shaft of a pile or earth anchor comprises extension members that are added as the shaft is forced into the ground. The joints are held together by tongues that are welded to the forward end of each extension member and bent rearwardly around holds on the rear end of the proceeding extension member.
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 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
- 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.