Bale cutting device
CA 2113141 C · Owner: Borgford, Benjamin J. · Inventors: Borgford, Benjamin J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for cutting baled crop materials particularly of the cylindrical bale type comprises an apparatus in the form of a conventional chain saw in which the chain is modified so that either the slide links or the guide links include an outwardly projecting cutting plate. The cutting plate is shaped to form a cutting edge having a ramp shape commencing at a position intersecting the previous link and extending outwardly at a gradual inclination of the order of 20° to an outermost point and then a trailing edge which extends backwardly toward the main body of the chain. The width of the cutting plate is less than the width of the chain itself in view of the tension in the bale which …
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 January 10, 1994 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2016.
- 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.