A device for automatic removal of milking means
CA 2112406 C · Owner: Alfa-Laval Agriculture International Ab · Inventors: Olofsson, Hans; Nilsson, Rutger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for automatic removal of a milking means (6) comprises an operating unit (2) having a cord drum with a cord (13), and a driving means for turning the cord drum for winding the cord on the latter. The free end of the cord is connected to the milking means, whereby the cord pulls the milking means off the teats of the animal as the cord drum, is turned by the driving means. According to the invention the driving means comprises a pneumatically operated motor. The advantage is that the operating unit can be made compact and with a low weight, and that the milker can unwind the cord without any substantial resistance from the motor, when the motor is inactivated.
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 June 23, 1992 and granted September 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 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.