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US 4,572,060 AGranted
Coffee boiler with an automatic feeding device
OwnerWei Y. Yung-Kuaninventor
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OwnerWei Y. Yung-Kuaninventor
Estimating the term…
This invention concerns about an automatic coffee boiler, especially one that can feed automatically a certain amount of coffee powder and boil the coffee powder with a certain quantity of water vapor previously fixed. Its main characteristics is to use two time adjusters in a controlled circuit to respectively set a period of time for activating a coffee feeding device and an electric heater in water tank, and also to use a sequence controlling circuit which can automatically activate in sequence the coffee powder feeder, the heater in the water tank and a music alarm. Through the above-mentioned devices, coffee powder can be automatically fed out and boiled with vapor to become liquid coffee ready for drinking. One of the other specialities of this invention is that an electromagnetic valve set at the outlet of the coffee feeding device is able to act simultaneously with said coffee feeding device. As said feeding device starts acting, said electromagnetic valve immediately pulls a vertical lid off the powder outlet to let coffee powder fall down through the outlet, and as said feeding device stops acting, said electromagnetic valve is released pushing the vertical lid to the outlet to shut it right away so that the coffee powder stored in will not be moistened to stick on the wall of the storing bottle. In addition, on the bottom of this automatic boiler a pressure switch is set to control the action of an electric heater is still filled with some liquid coffee, its weight may press said pressure switch to cause said electric heater to heat up the coffee pot keeping it warm.
In a machine for making hot beverages having a hopper for beverage grounds, a motor driven screw conveyor for delivering grounds from the hopper into a beverage mixing chamber, and delivery means for delivering hot water to the mixing chamber, the mixing chamber having an outlet for delivery into a beverage flask or the like, the improvement wherein the screw conveyor has a tubular casing with an outlet end located above an inlet leading into the mixing chamber, the machine including an electrically operated reciprocatory member having a disk portion providng a first valve for selectively opening and closing against the outlet end of the conveyor casing and a plate portion providing a second valve for simultaneously sliding over the mixing chamber inlet, and electric circuit means for controlling the reciprocatory member so as to simultaneously open the conveyor outlet and the mixing chamber inlet in unison to supply grounds to the mixing chamber and subsequently to simultaneously close the conveyor outlet and mixing chamber inlet in unison, the first and second valves inhibiting heated water vapor in the mixing chamber from entering the screw conveyor and grounds hopper.
Dependencies are inferred from the claim text.