Integral earth anchor
CA 2026343 C · Owner: Dziedzic, Edward · Inventors: Norman, Richard Moody; Dziedzic, Edward; Garton, Stanley Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An earth anchor (1) comprises a hub body (3) having a base plate (7). A shank (19) extends downwardly from a bottom surface (21) of the plate. The shank has a beveled lower edge (23) forming a tip (25) for penetrating the ground. A hub (9) extends upwardly from an upper surface (11) of the plate and non-drivingly engages the drive tool. A quadrilaterally formed circumferential side wall (17) extends upwardly from the outer margin of the plate. The side wall is spaced radially outwardly of the hub and forms a sleeve in which a portion of the drive tool is received. The base plate, hub, shank and side, wall are all integrally formed preferably through forging, or casting forming a hub body of …
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
- Filed September 27, 1990 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2012.
- 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.