Device for pneumatic milking, and teat cup for such a device
CA 2083357 A1 · Owner: Dietrich, Berthold Johannes Theodoor · Inventors: Dietrich, Berthold Johannes Theodoor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and device for pneumatic milking of cows. The device comprising a system of teat cups which are connected to a milk line, each cup being provided with a connection to a source of alternating vacuum. The milk line (7) from each teat cup (2) at a point near the liner (5) is provided with a branch (9) which is connected by way of a shut-off valve (10) to a line (11) for the supply of a cleaning medium. Method for cleaning a system of teat cups of a device for pneumatic milking of cows which consists in that after removal of the teat cups from a cow (3) on ending of a, milking operation, the inside of each of the teat cups (2) is flushed with a flushing fluid. The teat cups (2) are …
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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 November 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 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.