Soil aerating equipment
CA 1278720 C · Owner: Holland Equipment Limited · Inventors: Mayer, Matthew E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Soil aerating equipment has a frame moveable in an intended direction of travel, and at least a pair of shafts freely rotatably mounted on the frame for rotation about the shaft longitudinal axes. The shafts extending in rearwardly inclined opposite directions on opposite sides of a centre line of the frame extending in the direction of travel. The rearward inclination of the shafts is adjustable to desired angles in the range of from about 90° to about 120° to the direction of travel. Each shaft carries a series of soilengaging substantially planar tines extending therefrom in vertical planes and positioned to sequentially engage and penetrate the soil with consequent rotation of the …
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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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.