Soil aerating device
CA 1079110 A · Owner: Outboard Marine Corporation · Inventors: Hines, Charles E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a soil aerating device including a frame, a hollow cylindrical drum supported from the frame for rotation about a horizontally extending axis and for folling travel along the surface of the ground or turf to be aerated. Fixedly mounted on the exterior of the drum in registry with respective apertures provided in the drum are a plurality of hollow core-forming tines which are arranged to act much like involute gear teeth while, cutting and removing a plug or core from the ground or turf as the drum is rolled over the surface thereof and to leave, a "rack-like" pattern of holes. Each tine includes a pair of generally V-shaped, opposed side walls having an apex located on …
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 June 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 1997.
- 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.