Backflushing system
CA 1189258 A · Owner: Economics Laboratory, Inc. · Inventors: Mehus, Richard J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A backflushing system capable of being used with an automatic milking device is the subject of this patent application. The system includes a control cam (54) which can be moved linearly to effectuate the various functions. The cam (54) has formed thereon a plurality of lands (64, 66, 68, 70) which operate various actuators (92 94, 96). The various flushing functions and operation of a fail-safe valve (30) are governed by the actuators (92 94, 96). In a preferred embodiment, the cam (54) is movable in both forward and reverse directions and is so controlled by a toggle switch (72), movable between two positions which, operates a two position, five way regulation valve (58).
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 June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
- 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.