A universal/multi-purpose attachment for tractors (chore master)
CA 2116592 C · Owner: Strub, Laverne H. · Inventors: Strub, Laverne H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a piece of equipment that attaches to a tractor for the purpose of doing farm related chores and material handling. It is known to have one attachment for a single purpose and many attachments are needed to do the different chores in farming ie) material handling. In this invention only one attachment is needed and consists of a frame that is attached to the loader or three point hitch assemblies of the tractor using common mounting methods and from this frame is attached a blade that pivots in the center of the frame and is moved from one side to the other by use of hydraulics. To the top of the blade is mounted a hook assembly which is used for grabbing and locking material. To the …
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 28, 1994 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 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.