Automatic brewer
CA 2181229 C · Owner: Bunn-O-Matic Corporation · Inventors: Bunn, Arthur H.; Anson, James H.; Ford, David F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spool for use with a piston assembly in an automatic beverage brewing apparatus including a brew chamber having an inlet and an outlet, a filter disposed therein and, a water distribution system for introducing brew water and flush water therein. A flush water dispenser of the water distribution system is positioned centrally in the brew chamber for rinsing inside surfaces of the brew chamber. The piston assembly includes the spool and a device for controllably moving the spool in axial and rotary directions. The spool has a head, a base, and a necked portion extending between the head and the base. The head and base have external dimensions which are less than or substantially equal to …
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 January 6, 1993 and granted November 7, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 6, 2015.
- 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.