Milking machine hose
CA 2100780 A1 · Owner: Alfa-Laval Agriculture International Ab · Inventors: Hernvall, Hans; Pettersson, Torbjorn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hose (24) constitutes a part of a milking machine and has an end portion (30) which is radially expanded and applied on a tubular nipple (29), the outer diameter of which exceeds the inner diameter of the hose. The milking machine comprises means for providing a negative pressure in the hose. The hose is reinforced by means of at least one elongated reinforcement member (25 26), which, consists of a material substantially harder than the wall of the hose and which extends along the hose in a helical cavity in the wall of the hose. In addition, the reinforcement member completely fills up said cavity and is arranged therein such that, relative movement between the reinforcement member and …
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 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.