Device for ejection of ground coffee pressed into a cake from a brewing apparatus of a coffee machine
CA 2092909 C · Owner: Von Gunten, Jurg · Inventors: Lussi, Andre; Von Gunten, Jurg; Zurbuchen, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The ejecting device comprises an ejector (17) which is pivotably secured to an infusion cylinder (9) arranged to move along a parallel drive spindle (6) and a lug (22) , arranged towards the bottom of a side-membee (2) of a frame (I). A second piston (8) , arranged to move in the infusion cylinder (9) can be moved to the upper end of said, infusion cylindee (9) as the latter moves downwards. A compressed block of ground , coffee (40) is forced out of the infusion cylinder (9) during the movement. It lies on the , convex surface (42) of the second piston (8). The ejector (17) comprises two pivoted levers, (18, 19) extending along the infusion cylinder (9) and beside it. In the lower …
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 July 28, 1992 and granted November 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 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.