Hitachi, Ltd.

Toshiyasu Kamano

Tamotu Shikamori

Takashi Ishino

Isao Hiyama

Yousuke Nagano

Hiroshi Ohsugi

Shizuo Turuta

Hiroyuki Toshimitsu

Masayoshi Hirayama

Hiroshi Oshugi

Hideaki Hiratsuka

Toshiichi Ishikawa

A fully automatic washing machine comprising a washing/dehydration basket, an agitator rotatably disposed inside the washing/dehydration basket, a motor for rotating the washing/dehydration basket or the agitator, a detector for detecting the amount of wash corresponding to the washing load, a detector for detecting the level of water in the washing/dehydration basket, and a control circuit for controlling operations of washing and dehydration processes. Water-reserved-starting of the dehydration process is effected in such a manner that dehydration is started while leaving a certain quantity of water in the washing/dehydration basket. The amount of cloth is detected by the cloth amount detector before the start of the washing process or at an initial stage of the same, and a value thus detected is stored in the control circuit. Washing water is discharged while reading a signal from the water level detector before the start of the dehydration process, thereby leaving a certain quantity of water corresponding to the cloth amount value previously stored.

Fully automatic washing machine

A washing machine is disclosed in which water is poured on the washing within a washing and dehydrating tank through a water supply port while turning the washing and dehydrating tank slowly, to thereby cause the water to sink into the washing before the normal washing thereof so as to reduce the bulk of the washing or prevent the floating of the washing. Thus, the regular agitating and washing of the washing are well performed.

Washing machine

When an abnormal washing condition occurs during a washing process, an auto-off power source switch is made automatically to present an off condition after a long shelf time such as one hour. In case of the abnormal washing condition of the washing process, since the switch maintains the long shelf time, an operator can notice such an abnormal condition during this long shelf time and then remaining normal washing process can be carried out continuously by getting rid of the abnormal cause. It is therefore unnecessary to re-set the washing process. After the washing process has been finished, the switch is made automatically to present the off condition at a short shelf time such as five minutes. During this short shelf time, it is unnecessary to start the switch at an on condition so as to re-start for carrying out next washing process.

Full automatic electric washing machine having an auto-off power source

Growing community of inventors

Hitachi, Japan

Toshiyasu Kamano