Tilling machine with pivotal bi-directional operative tines
CA 1265949 C · Owner: American Yard Product, Inc. · Inventors: Goertzen, Gerold G.; Herscher, Lee R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tine assembly for use with a rotary tiller comprising a selectively rotatable tine shaft and a plurality pivotally mounted tines. The tines each includes stop surfaces associated with an innermost end of the tine whereby the tine pivots to one position when the tine shaft is rotated in a clockwise direction and automatically pivots to a second position when the tine shaft is rotated in a counterclockwise direction. The angle of pivot between the two positions is such that the leading edge of the ground engaging portion of the tine sweeps a larger radius than the following portion of the tine when the tine shaft is rotated in either the clockwise or counterclockwise directions. 16-109/jcp
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 February 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 2007.
- 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.