|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||H05B-001/02 A47J-031/30 A47J-031/56 F24H-001/20|
|미국특허분류(USC)||219/308; 099/281; 099/285; 099/293; 099/302.R; 219/272; 219/297; 219/331; 219/506|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 51 인용 특허 : 1|
An espresso coffee machine having a boiler provided with an electric resistance heater is fitted with a temperature transducer of the negative temperature coefficient (NTC) resistance type producing an output signal indicative of the boiler temperature. A comparator unit is fed the output signal and compares the signal with the extreme values of a temperature range to control activation and deactivation of the heater. A first display device fed by the output signal continuously displays the boiler water temperature. The output signal is also continuously...
1. In an espresso coffee machine of the type having a boiler and heating means associated with the boiler for heating the water contained in the boiler, the improvement comprising a temperature transducer fitted within the boiler and providing a temperature output signal, said transducer being a negative temperature coefficient type (NTC) resistance, activating means responsive to said output signal for activating said heating means, said means for activating the heating means including a comparator unit fed by the said temperature output signal and with...