System and method for brewing beverages

• US 20050039606A1
• Filed: 09/28/2004
• Published: 02/24/2005
• Est. Priority Date: 04/02/2002
• Status: Abandoned Application

• Current Assignee: Brewbot Incorporated
• Original Assignee: Brewbot Incorporated
• Inventors: Hall, Robert C., Barry, Michael R., Waymire, Gary L., Washburn, Shane
• Application Number:
  US10/955,344
• Publication Number:
  US 20050039606A1
• Time in Patent Office: Days
• US Class Current: 99/279
• CPC Class Codes: A47J 31/047 with automatic cut-off of heat supply

Abstract

Systems and methods for brewing beverages in accordance with the present invention can improve the flavor of brewed beverages and reduce the vertical space required for a system using suction. One such assembly comprises a brewing chamber adapted to hold a filter having an intake duct for receiving fluid for brewing, and an output duct for expelling a brewed beverage. The brewing chamber is positioned above a pressurizable container, or carafe, having an adjustable standpipe and containing the fluid. The carafe has a heated base, which when heated causes pressure to build up, forcing the fluid up the standpipe, through a check valve, through the intake duct and into the filter. Once substantially all of the fluid has been urged into the brew chamber, the heat is removed, creating a partial vacuum that pulls the brewed beverage back into the carafe. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

Claims

1. A two-chamber brewing system, comprising:

a first chamber adapted for holding a filter and capable of receiving and expelling a fluid; and

a second chamber capable of creating a pressure differential between the first chamber and the second chamber, the second chamber having a heated base and a standpipe to allow fluid to flow between the first chamber and the second chamber.

2. The two-chamber brewing system of claim 1, wherein the standpipe is adjustably connected with the second chamber such that a vertical space between a bottom end of the standpipe and the base can be increased or decreased.

3. The two-chamber brewing system of claim 1, wherein the first chamber is capable of receiving the fluid from an intake duct positioned above a bottom of the filter, and expelling the fluid through an output duct positioned below the filter.

4. The two-chamber brewing system of claim 3, wherein the output duct includes a check valve.

5. The two-chamber brewing system of claim 4, wherein the intake duct includes a check valve.

6. The two-chamber brewing system of claim 1, wherein the standpipe includes a vent hole.

7. The two-chamber brewing system of claim 1, wherein the second chamber is adapted to be used as a serving pitcher, such that the first chamber is capable of remaining stationary.

8. The two-chamber brewing system of claim 1, wherein the first chamber is connected with a frame having a pedestal to position the second chamber such that a sealing surface of the first chamber can be brought into contact with the second chamber so that the standpipe is isolated from atmosphere.

9. The two-chamber brewing system of claim 8, wherein the heated base of the second chamber includes a heater element;

wherein the frame has an electrical outlet to engage the heated base such that power is provided to the heater element.

10. A method for brewing beverages using a brew chamber having an intake duct and an output duct placed atop a pressurizable container having a standpipe, comprising:

placing a substance to be brewed and a filter in said brew chamber such that the filter is positioned below said intake duct and over said output duct;

heating a fluid contained with said pressurizable container by applying heat to a base of said pressurizable container;

urging the fluid up said standpipe and into said brew chamber through said intake duct, such that the fluid is dispensed into the filter;

removing heat from said pressurizable container;

creating a partial vacuum in said pressurizable container; and

drawing the fluid through the filter and said output duct and into said pressurizable container.

11. The method of claim 10, further comprising the step following the step of urging the fluid up said standpipe and into said brew chamber of:

urging vapor up said standpipe and into said chamber through said intake duct, such that the vapor agitates the fluid.

12. The method of claim 11, further comprising the step of:

adjusting a position of said standpipe relative to said pressurizable container.

13. A system for brewing beverages, comprising:

a pressurizable container adapted to hold a fluid;

a brewing chamber adapted to hold a filter;

a first pathway adapted to receive the fluid from the pressurizable container and deposit the fluid within the filter; and

a second pathway adapted to receive the fluid from the brewing chamber and deposit the fluid within the pressurizable container; and

a standpipe positioned within the pressurizable container to allow the fluid to flow between the brewing chamber and the pressurizable container.

14. The system of claim 13, wherein the first pathway includes a nozzle positioned above the filter, the nozzle allowing the fluid to deposit within the filter.

15. The system of claim 13, wherein the second pathway includes a check valve adapted to open when a pressure in the pressurizable container drops below a pressure in the brewing chamber to allow the fluid to flow through the second pathway and the standpipe into the pressurizable container.

16. The system of claim 13, wherein the filter is a basket filter.

17. A system for brewing beverages, comprising:

a pressurizable container adapted to hold a fluid;

a brewing chamber adapted to hold a filter, the brewing chamber having;

a first pathway adapted to receive the fluid from the pressurizable container and deposit the fluid within the filter; and

a second pathway adapted to receive the fluid from the filter and deposit the fluid within the pressurizable container.

18. The system of claim 17, wherein the first pathway includes a first check valve and a nozzle positioned above the filter.

19. The system of claim 17, wherein the second pathway includes a second check valve disposed below the filter.

20. The system of claim 19, wherein the second check valve is adapted to open when a pressure in the pressurizable container drops below a pressure in the brewing chamber to allow the fluid to flow through the second pathway.

21. The system of claim 17, further comprising a standpipe positioned within the pressurizable container to allow the fluid to flow between the brewing chamber and the pressurizable container.

22. A two-chamber brewing system, comprising:

a brewing chamber;

a filter disposed within the brewing chamber, the filter including a bottom;

a pressurizable container disposed beneath the first chamber;

a first pathway having a proximal end and a distal end, the proximal end arranged to receive a fluid from the pressurizable container and the distal end including a nozzle positioned above the bottom of the filter;

a second pathway having a proximal end and a distal end, the proximal end arranged to deposit the fluid into the pressurizable container and the distal end positioned below the bottom of the filter.

23. The system of claim 22, wherein the filter is a basket filter.

24. The system of claim 22, wherein the first pathway includes a first check valve.

25. The system of claim 22, wherein the second pathway includes a second check valve.

26. The system of claim 25, wherein the second check valve is adapted to open when a pressure in the pressurizable container drops below a pressure in the brewing chamber to allow the fluid to flow through the second pathway.

27. The system of claim 22, further comprising a standpipe positioned within the pressurizable container to allow the fluid to flow between the brewing chamber and the pressurizable container.

28. A system for brewing beverages, comprising:

a first chamber adapted to hold a fluid;

a second chamber;

a first duct adapted to receive the fluid from the first chamber and deposit the fluid within the second chamber; and

a second duct adapted to receive the fluid from the second chamber and deposit the fluid within the first chamber.

29. The system of claim 28, wherein the first duct includes a first check valve and a nozzle disposed within the second chamber.

30. The system of claim 28, wherein the second duct includes a second check valve disposed below the second chamber.

31. The system of claim 30, wherein the second check valve is adapted to open when a pressure in the first chamber drops below a pressure in the second chamber to allow the fluid to flow through the second duct.

32. The system of claim 28, further comprising a standpipe disposed at least partially within the first chamber to allow the fluid to flow between the second chamber and the first chamber.

33. A system for brewing beverages including a pressurizable container disposed beneath a brew chamber, the pressurizable container including a standpipe allowing a fluid to flow between the pressurizable container and the brew chamber, the improvement comprising:

a fluid exchange mechanism including;

a first pathway disposed around the brew chamber, the first pathway having a distal end positioned within the brew chamber or above the brew chamber; and

a second pathway disposed below the brew chamber.