Heat detector for livestock
CA 1138266 A · Owner: Griffin, Shawn · Inventors: Ryden, Wayne R.; Griffin, James E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure responsive delayed release standing heat detector for cows or other livestock comprises a small singleuse, flexible packet to be secured to the body of a cow in a position to be contacted by a mounting animal. A sponge-like body partially presaturated with a colored indicator fluid is contained within an air tight flexible plastic bulb or container having a stopper which is retained by friction and adapted to be expelled when the sponge is compressed under sustained pressure of a mounting animal. Expulsion of the stopper element and discharge of the indicator fluid leaves a telltale indication that the animal has been mounted.
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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
- 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.