Apparatus for making tea or coffee
CA 1237909 A · Owner: Still (W.M.) & Sons Limited · Inventors: Hayes, Cecil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A beverage brewing apparatus of the infusion type in which a hot water tank contains several infusion charges, the tank is connected at the top to a conduit extending to an infusion sprayer over a pan containing granular matter to be infused, replenishing water is supplied to the bottom of the tank and is used to force a top charge of water in the tank into the pan a heater, for the tank is controlled by a lower thermostat in the tank and an upper thermostat indicates when the top charge is at the correct temperature for infusion to take place. The arrangements ensure a ready supply of hot water for further infusions whilst reducing the instant power requirements for the heater.
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 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
- 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.