Rapid exit herringbone stall
CA 2085515 C · Owner: Dec International, Inc. · Inventors: Nelson, William S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A herringbone-type milking parlor of the type in which the cow is milked from the side utilizes a rotating rail that moves from a horizontal exit position to a vertical position to urge the cow to exit from the milking stall. The rail stays in this position until a new cow has moved into the milking stall at which, time the rail indexes back to a position short of vertical to engage the brisket of the cow and move it gently back towards the rump rail and into a proper milking position.
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 December 16, 1992 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2014.
- 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.