Machine for making hot tea

• US 4,888,466 A
• Filed: 06/16/1988
• Issued: 12/19/1989
• Est. Priority Date: 07/11/1987
• Status: Expired due to Fees

• Current Assignee: Robert Krups Stiftung & Company AG
• Original Assignee: Robert Krups Stiftung & Company AG
• Inventors: Hoffmann, Erich
• Primary Examiner(s): Pellinen, A. D.
• Assistant Examiner(s): Evans, Geoffrey S.
• Application Number:
  US07/207,763
• Time in Patent Office: 551 Days
• Field of Search: 338/306, 338/314, 99/279-282, 99/288, 99/, 99/304-307, 219/543, 219/301, 219/302, 219/329, 219/334, 219/335, 219/338, 219/310, 219/311
• US Class Current: 392/444
• CPC Class Codes: A47J 31/0576 with a sealed water boiling vessel in which the steam pressure urges the hot water through a rising pipe with brewing vessel adapted for extraction under pressure A47J31/30
• CPC Class Codes: A47J 31/56 having water-level controls; having temperature controls

Abstract

A machine for making hot tea wherein a pressure-resistant container for the supply of water supports or embodies an insulating carrier for one or more thick film conductors. A riser, which can be caused to move up and down relative to the bottom wall of the container, serves to convey hot water into a steeping receptacle wherein the water comes in contact with tea leaves. The sealable outlet in the bottom of the steeping receptacle can discharge hot tea into a vessel resting on a warming plate. The warming plate is supported by a leg of the housing for the container and steeping receptacle and can be heated by a second heater having a carrier for one or more thick film conductors.

Claims

1. Machine for making a hot beverage, particularly tea, by contacting a heated liquid with a flavoring agent, comprising a housing having a pressure-resistant container for a supply of liquid, said container having an upper portion and a lower portion;

a steeping receptacle for a supply of flavoring agent and hot beverage in said housing, said receptacle having a sealable outlet for hot beverage;

an electric heater for the supply of liquid in said container, including at least one insulating carrier in the region of the lower portion of said container and at least one thick film conductor on said carrier; and

conduit means for conveying heated liquid from said container into said receptacle.

2. The machine of claim 1, wherein the lower portion of said container includes a bottom wall and said conduit means comprises a riser extending into said container and having an open lower end adjacent said bottom wall.

3. The machine of claim 1, wherein said carrier includes a plate-like member beneath said bottom wall, said member having an upper side adjacent said bottom wall and an underside, said at least one thick film conductor being provided at the underside of said member.

4. The machine of claim 2, wherein said carrier contains a ceramic material.

5. The machine of claim 2, wherein said carrier contains a plastic material.

6. The machine of claim 1, wherein said lower portion consists of a metallic material and includes a bottom wall, a portion at least of said upper portion consisting of a light-transmitting material, said carrier being provided beneath and being adjacent said bottom wall.

7. The machine of claim 1, wherein at least a portion of said upper portion transmits light and said upper portion is provided with graduations denoting different quantities of liquid in said container.

8. The machine of claim 1, wherein said portions of said container are separable from each other and further comprising a sealing element interposed between said portions.

9. The machine of claim 8, wherein said housing is hollow and includes an internal support for said container.

10. The machine of claim 1, wherein said lower portion includes a plurality of walls including at least one wall of insulating material, said at least one wall constituting said carrier.

11. The machine of claim 10, wherein said at least one wall has an inner side and an outer side and said at least one thick film conductor is applied directly to the outer side of said at least one wall.

12. The machine of claim 1, wherein said heater comprises a plurality of thick film conductors, and further comprising means for selectively connecting said conductors with an energy source.

13. The machine of claim 12, wherein said conductors include at least one first conductor having a first resistance and at least one second conductor having a different second resistance to the flow of electric current.

14. The machine of claim 12, wherein said conductors include at least one first conductor having a first width and at least one second conductor having a different second width.

15. The machine of claim 12, wherein said conductors include at least one first conductor having a first length and at least one second conductor having a different second length.

16. The machine of claim 1, wherein the lower portion of said container includes a bottom wall and said conduit means includes a riser extending into said container and having a liquid-admitting opening in said container, at least a portion of said riser being movable relative to said container so as to place said opening at a selected one of a plurality of different distances from said bottom wall.

17. The machine of claim 16, wherein said riser has a lower end and said-opening is provided in said lower end.

18. The machine of claim 16, wherein said riser includes a plurality of tubular sections which are telescoped into each other.

19. The machine of claim 16, wherein said upper portion has a top wall and said riser is substantially vertically movably mounted in said top wall.

20. The machine of claim 1, wherein said housing includes a support for a vessel which is arranged to receive from the receptacle hot beverage by way of said outlet means, and further comprising means for heating the vessel on said support including a second insulating carrier in or on said support and at least one additional thick film conductor on said second carrier.