[특허]Brewing device with ground coffee quantity control and coffee machine comprising such a device

Brewing device with ground coffee quantity control and coffee machine comprising such a device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A47J-031/40 A47J-031/36
출원번호	US-0151297 (2011-06-02)
등록번호	US-9986868 (2018-06-05)
우선권정보	FR-10 54502 (2010-06-08)
발명자 / 주소	Vitel, Arnaud Lebuffe, Gilles Gailhard, Thierry
출원인 / 주소	SEB S.A.
대리인 / 주소	The Webb Law Firm
인용정보	피인용 횟수 : 0 인용 특허 : 30

초록 ▼

A brewing device (2) for an espresso-type coffee machine including a brewing chamber (12) for receiving ground coffee, a movably mounted pressure piston (13) in translation with a stroke that extends from an upper retracted position in which the pressure piston (13) is located above the brewing chamber (12) to a lower tamping position in which the pressure piston (13) enters said brewing chamber (12) and a potentiometer controlled by driving means during the stroke of the pressure piston (13) to measure the tamping position of said pressure piston and to thereby calculate the height of the compressed cake of ground coffee. The driving means only act on the potentiometer for a portion of the stroke of the pressure piston (13).

대표청구항 ▼

1. A brewing device for an espresso-type coffee machine comprising a brewing chamber for receiving ground coffee, a movably mounted pressure piston in translation with a stroke that extends from an upper retracted position in which the pressure piston is located above the brewing chamber to a lower tamping position in which the pressure piston enters said brewing chamber and a potentiometer controlled by a driving mechanism during the stroke of the pressure piston to measure the tamping position of said pressure piston and to thereby calculate the height of the compressed cake of ground coffee, the driving mechanism only acting on the potentiometer for a portion of the stroke of the pressure piston. 2. A brewing device according to claim 1, wherein the potentiometer is a rotary potentiometer having an axis of rotation. 3. A brewing device according to claim 2, wherein the axis of rotation of the potentiometer comprises braking means. 4. A brewing device according to claim 3, wherein the braking means are formed by an elastomer O-ring arranged in a cover arranged around the potentiometer, said O-ring being fitted to the diameter of the axis of rotation to produce friction when the axis is rotating. 5. A brewing device according to claim 2, wherein the lever and the cover comprise, respectively, stops and protrusions limiting the rotation of the axis of the potentiometer. 6. A brewing device according to claim 2, wherein the driving mechanism acts on the potentiometer for less than half of the stroke of the pressure piston. 7. An espresso-type coffee machine comprising a brewing device as set forth in claim 2. 8. A brewing device according to claim 2, wherein the driving mechanism comprises a lever arranged along the axis of rotation of the potentiometer that engages with the contact surface arranged at the end of an arm fixed to the pressure piston. 9. A brewing device according to claim 8, wherein the driving mechanism acts on the potentiometer for less than half of the stroke of the pressure piston. 10. An espresso-type coffee machine comprising a brewing device as set forth in claim 8. 11. A brewing device according to claim 8, wherein the arm fixed to the pressure piston is an upper arm that drives the lever throughout a lower portion of the stroke of the pressure piston up to the tamping position and in which the driving mechanism comprises a second contact surface arranged at the end of a lower arm fixed to the pressure piston, driving the lever through an upper portion of the stroke of the pressure piston up to the retracted position. 12. A brewing device according to claim 11, wherein the driving mechanism acts on the potentiometer for less than half of the stroke of the pressure piston. 13. A brewing device according to claim 1, wherein the driving mechanism acts on the potentiometer for less than half of the stroke of the pressure piston. 14. A brewing device according to claim 1, wherein said brewing device further comprises a hydraulic cylinder to drive the pressure piston. 15. An espresso-type coffee machine comprising a brewing device, the brewing device comprising a brewing chamber for receiving ground coffee, a movably mounted pressure piston in translation with a stroke that extends from an upper retracted position in which the pressure piston is located above the brewing chamber to a lower tamping position in which the pressure piston enters said brewing chamber and a potentiometer controlled by a driving mechanism during the stroke of the pressure piston to measure the tamping position of said pressure piston and to thereby calculate the height of the compressed cake of ground coffee, the driving mechanism only acting on the potentiometer for a portion of the stroke of the pressure piston.

이 특허에 인용된 특허 (30)

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Bockbrader, Robert H., Device for producing small batches of coffee from liquid coffee concentrate.
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Schmed Arthur-Joachim,CHX, Machine for making beverages such as espresso coffee with automatic ground coffee introduction and dregs expulsion.
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Muis Jan A. (Odijk NLX) Edelbroek Johannes H. (Odijk NLX), Method and apparatus for preparing a beverage.
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Campetella, Carl James; Garcia, Gil, Method for making coffee with a crema layer.
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Hunt Roderick C. (Louisville KY), Moisture prevention valve in an apparatus for the preparation of liquid beverage from solid and liquid components.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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연합인증

Brewing device with ground coffee quantity control and coffee machine comprising such a device 원문보기

초록 ▼

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Brewing device with ground coffee quantity control and coffee machine comprising such a device 원문보기

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