Ground anchor
CA 2437299 A1 · Owner: Keck, Arthur · Inventors: Keck, Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ground anchor designed to be screwed into the ground comprising a shaft (3), whose upper end (8a) is provided with a bearing part (8) that can be placed on the ground, and a manipulation device (9). Said anchor has several screwthread blades (5, 6, 7) consisting of a flat material which spiral around the , shaft (3), are arranged along the shaft (3) at a distance from one another in an offset manner, and respectively consist of a screw thread with upper and lower blade ends (11, 12). The length of the thread of the individual blades (5, 6, 7) slightly exceeds 360~, so that the perimeter of the blade ends (11 12) overlaps, forming a cutting gap (11a) that is delimited by a plane on its …
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 February 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 2, 2023.
- 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.