[미국특허]
Machine for brewing a beverage such as coffee and related method
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47J-031/00
A23F-005/00
출원번호
US-0976663
(2010-12-22)
등록번호
US-8371211
(2013-02-12)
발명자
/ 주소
Nosler, Zander
Hulett, Randy
Wyer, Jorah
Baum, Michael
Allison, Jeff
출원인 / 주소
Starbucks Corporation
인용정보
피인용 횟수 :
12인용 특허 :
162
초록▼
A machine for brewing a beverage such as coffee includes a chamber and a piston disposed in the chamber. The piston is operable to move to a first position to allow the chamber to receive a liquid and a flavor base such as ground coffee, to remain in the first position for a time sufficient for the
A machine for brewing a beverage such as coffee includes a chamber and a piston disposed in the chamber. The piston is operable to move to a first position to allow the chamber to receive a liquid and a flavor base such as ground coffee, to remain in the first position for a time sufficient for the beverage to brew, and to move to a second position to dispense the beverage by forcing the beverage out of the chamber. By modifying some or all steps of the French press brewing technique, the machine can typically control coffee-brewing parameters with a level of precision that yields brewed coffee having a uniform taste from cup to cup, and can typically brew the coffee with a speed that renders the machine suitable for use by establishments that serve significant amounts of coffee.
대표청구항▼
1. A machine for brewing coffee, the machine comprising: a brew chamber having an opening operable to receive ground coffee;a reservoir operable to hold water, to heat the water to a first predetermined temperature, and to provide heated water to the brew chamber;a temperature control unit disposed
1. A machine for brewing coffee, the machine comprising: a brew chamber having an opening operable to receive ground coffee;a reservoir operable to hold water, to heat the water to a first predetermined temperature, and to provide heated water to the brew chamber;a temperature control unit disposed between the reservoir and the brew chamber and operable to cool the water from the reservoir to a second predetermined temperature;a filter;a piston disposed in the chamber and operable to force brewed coffee out of the chamber through the filter; anda wiper operable to sweep the ground coffee off of the piston after the piston forces the brewed coffee out of the chamber. 2. The machine of claim 1, further comprising: a hopper operable to store coffee beans; anda grinding-and-measuring unit operable to receive coffee beans from the hopper, to grind the beans into ground coffee, and to introduce a predetermined amount of ground coffee into the brew chamber. 3. The machine of claim 2, wherein the grinding and measuring unit comprises an optical sensor operable to indicate an amount of ground coffee that the unit introduces to the brew chamber. 4. The machine of claim 2, wherein the grinding and measuring unit comprises an ultrasonic sensor operable to indicate an amount of ground coffee that the unit introduces to the brew chamber. 5. The machine of claim 2, wherein the grinding and measuring unit comprises a disk operable to indicate an amount of ground coffee that the unit introduces to the brew chamber. 6. The machine of claim 2, wherein the grinding and measuring unit comprises: a grinding motor; anda current sensor operable to indicate an amount of ground coffee that the unit introduces to the brew chamber based on a current drawn by the grinding motor. 7. The machine of claim 2, wherein the grinding and measuring unit comprises: a grinding motor; anda temperature sensor operable to indicate an amount of ground coffee that the unit introduces to the brew chamber based on a temperature of the grinding motor. 8. The machine of claim 2, wherein the grinding-and-measuring unit comprises:a container operable to hold the ground coffee;a mass sensor operable to indicate a mass of the ground coffee held in the container; anda mechanism to dump the ground coffee in the container into the brew chamber. 9. The machine of claim 2, wherein the grinding-and-measuring unit comprises: a container operable to hold ground coffee; anda mechanism to dump the ground coffee in the container into the brew chamber. 10. The machine of claim 2, wherein the grinding-and-measuring unit comprises: a container operable to hold ground coffee; anda mass sensor operable to indicate a mass of the ground coffee held in the container. 11. The machine of claim 1, further comprising a water transporting unit disposed between the reservoir and the brew chamber and operable to receive heated water from the reservoir and to introduce a predetermined amount of the heated water into the chamber via the opening. 12. The machine of claim 1, further comprising a water transporting unit disposed between the reservoir and the brew chamber and operable to receive heated water from the reservoir and to introduce a predetermined amount of the heated water into the chamber via the opening, wherein the water transporting and measuring unit comprises a pump that introduces the water into the brew chamber at a rate that is proportional to a time during which the pump is active. 13. The machine of claim 1 wherein the piston is operable to draw a predetermined amount of heated water from the reservoir into the chamber by moving a distance that corresponds to the predetermined amount. 14. The machine of claim 1 wherein: the filter is operable to cover the opening of the brew chamber; andthe piston is operable to force the brewed coffee out of the chamber via the opening and through the filter. 15. The machine of claim 1, wherein the wiper and the filter are attached to a common assembly. 16. The machine of claim 1, further comprising an electronic controller operable to control operation of a grinding and measuring unit, the reservoir, a water transporting unit, the piston, and the wiper. 17. The machine of claim 1, further comprising: a substantially flat surface contiguous with the opening of the brew chamber;wherein the piston has a surface and is operable to move into a wipe position where the piston surface is substantially coplanar with the contiguous surface after the piston forces the brewed coffee out of the chamber; andwherein the wiper is operable to sweep the ground coffee from the piston surface when the piston is in the wipe position. 18. The machine of claim 1, further comprising a cleaning mechanism operable to remove ground coffee from the filter and the wiper after the wiper sweeps the coffee grounds from the piston. 19. The machine of claim 1, wherein machine is operably connected to a water source, and wherein the temperature control unit is operable to utilize water from the water source in order to cool the water from the reservoir to the second predetermined temperature. 20. The machine of claim 19, wherein the temperature control unit is operable mix the water from the reservoir with the water from the water source in order to cool the water from the reservoir to the second predetermined temperature. 21. The machine of claim 20, wherein the temperature control unit is further operable to: sense a temperature of at least one of the water from the reservoir or the water from the water source, andmix the water from the reservoir with the water from the water source based at least in part on the sensed temperature. 22. The machine of claim 20, wherein the temperature control unit is further operable to: mix an amount of the water from the reservoir with an amount of the water from the water source;sense a temperature of the mixed water; andadjust at least one of the amount of the water from the reservoir or the amount of the water from the water source based at least in part on the sensed temperature. 23. The machine of claim 19, wherein the temperature control unit is operable to utilize a heat exchanger to cool the water from the reservoir using the water from the water source. 24. The machine of claim 1, wherein the filter comprises: an outlet; andone or more ribs arranged to direct brewed coffee that is forced through the filter towards the outlet. 25. A machine for brewing coffee, the machine comprising: a brew chamber having an opening operable to receive ground coffee;a reservoir operable to hold water, to heat the water to a first predetermined temperature, and to provide heated water to the brew chamber; anda piston disposed in the chamber and operable to force brewed coffee out of the chamber through a filter;wherein the filter is in fixed attachment with a wiper operable to sweep the ground coffee off of the piston after the piston forces the brewed coffee out of the chamber. 26. The machine of claim 25, wherein the filter comprises: an outlet; andone or more ribs arranged to direct brewed coffee that is forced through the filter towards the outlet.
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