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특허 상세정보

Apparatus for preparing beverages with end of brew phase detection

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) A47J-031/00   
미국특허분류(USC) 992/82 ; 992/81 ; 992/83 ; 992/85
출원번호 US-0243717 (1999-02-03)
우선권정보 EP-0200397 (1998-02-09)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Bartlett
인용정보 피인용 횟수 : 41  인용 특허 : 5
초록

An apparatus for preparing beverages, such as a coffee brewer, has a device for measuring the periods of time during which the heating element is switched on and off by a thermostat connected in series with the heating element. The ratio between the on period and the off period is computed. If the off period is smaller than the on period, an indication is given that there is scale deposit in the water pipe. If the off period is greater than the on period, an indication is given that brewing has finished and, optionally, the heating element may be switche...

대표
청구항

[ What is claimed is:] [1.] An apparatus for preparing beverages, comprising: a reservoir for holding water, an electric heating element for heating the water, means for the transport of heated water to an outlet opening, a thermostat for turning on and turning off the heating element, and means for measuring an off period of the heating element, wherein the apparatus further comprises:means for measuring an on period of the heating element, means for determining a ratio between the off period and the on period, and means for activating a mode of operati...

이 특허를 인용한 특허 피인용횟수: 41

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