Espresso coffee machine with preinfusion device
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47J-031/44
A47J-031/057
출원번호
US-0990272
(2008-04-30)
등록번호
US-8505441
(2013-08-13)
국제출원번호
PCT/IT2008/000297
(2008-04-30)
§371/§102 date
20101029
(20101029)
국제공개번호
WO2009/133578
(2009-11-05)
발명자
/ 주소
Bambi, Piero
출원인 / 주소
La Marzocco, S.R.L.
대리인 / 주소
Hart IP Law & Strategies
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
An espresso coffee machine comprises a boiler and a pump for feeding hot water under pressure to one or more brew groups (1), each of which comprises a receptacle (24) for infusing a predetermined dose of ground coffee, a hot water feed pipe (38) and an outlet pipe (40). Manual operating means (30,
An espresso coffee machine comprises a boiler and a pump for feeding hot water under pressure to one or more brew groups (1), each of which comprises a receptacle (24) for infusing a predetermined dose of ground coffee, a hot water feed pipe (38) and an outlet pipe (40). Manual operating means (30, 50) are provided at the inlet of each brew group for selectively putting the coffee powder receptacle (24) in communication with the water feed pipe (38), with the outlet pipe 40 or with both the pipes in order to preinfuse the coffee powder.
대표청구항▼
1. An espresso coffee machine comprising a brew group having a boiler and a pump for feeding a flow of hot water under pressure to the brew group, wherein the brew group comprises: a receptacle for infusing a predetermined dose of ground coffee, a hot water feed pipe and an outlet pipe; wherein the
1. An espresso coffee machine comprising a brew group having a boiler and a pump for feeding a flow of hot water under pressure to the brew group, wherein the brew group comprises: a receptacle for infusing a predetermined dose of ground coffee, a hot water feed pipe and an outlet pipe; wherein the espresso coffee machine further comprises a manual operating element for diverting and dividing the flow of hot water from the boiler at the inlet of the brew group for selectively putting the infusion receptacle in communication with one of (1) the water feed pipe, (2) the outlet pipe, and (3) simultaneously both the water feed pipe and the outlet pipe in order to preinfuse coffee powder, wherein the element is configured to manual operation by a user so that preinfusion time can be set at a discretion of the user. 2. The machine according to claim 1, wherein the element for diverting and dividing the flow of hot water comprises: a centrally hollow cylindrical body having a side wall with two openings for connecting its internal cavity to the hot water feed pipe and to the outlet pipe, respectively;a piston that moves axially within the cylindrical body, wherein the piston has a horizontal through hole and a vertical hole which is connected to the horizontal hole in such a way as to form an internal conduit that puts the side wall of the piston in communication with a bottom of the piston;a drive rod for moving the piston between a lowermost position, an intermediate position and an uppermost position in such a way that the internal conduit in the piston puts the infusion receptacle in communication only with the outlet pipe or puts the hot water feed pipe in partial communication with both the outlet pipe and with the infusion receptacle for preinfusion or puts the feed pipe in communication only with the infusion receptacle for dispensing the espresso. 3. The machine according to claim 2, further comprising a lead screw and nut system cooperating with the drive rod. 4. The machine according to claim 2, wherein it further comprises a microswitch for starting the pump, the microswitch being designed to be triggered when the water feed pipe is in communication only with the espresso dispensing receptacle. 5. The machine according to claim 2, wherein the two openings of the centrally hollow cylindrical body are located at different heights along an axis of the cylindrical body. 6. The machine according to claim 2, wherein the two openings of the centrally hollow cylindrical body are located at an angular interval of approximately 60°. 7. The machine according to claim 2, wherein the drive rod comprises a handle. 8. The machine according to claim 1, wherein the machine comprises a plurality of brew groups, wherein the pump feeds a flow of hot water under pressure to the plurality of brew groups. 9. The machine according to claim 1, wherein the brew group comprises a vertical cylindrical chamber having a base with a hole in the middle thereof and a cover screwed to a ring. 10. The machine according to claim 9, wherein the manual operating element for diverting and dividing the flow of hot water from the boiler is mounted in the vertical cylindrical chamber and extends vertically. 11. The machine according to claim 10, wherein the element for diverting and dividing the flow of hot water comprises: a centrally hollow cylindrical body comprising having a side wall with a first opening for connecting an internal cavity of the cylindrical body to the hot water feed pipe and a second opening for connecting the internal cavity of the cylindrical body to the outlet pipe;a piston that moves axially within the cylindrical body, wherein the piston has a horizontal through hole and a vertical hole which is connected to the horizontal through hole in such a way as to form an internal conduit that puts a side wall of the piston in communication with a bottom of the piston;a drive rod for moving the piston between a lowermost position, an intermediate position and an uppermost position, so that when the piston is in the lowermost position, the piston internal conduit puts the infusion receptacle in communication only with the outlet pipe,when the piston is in the intermediate position, the hot water feed pipe is in partial communication with both the outlet pipe and with the infusion receptacle for preinfusion,when the piston is in the uppermost position, the piston internal conduit puts the feed pipe in communication only with the infusion receptacle for dispensing the espresso.
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이 특허에 인용된 특허 (4)
Greiwe Hansdieter,DEX, Beverage preparer, in particular coffee machine.
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