Baths – closets – sinks – and spittoons – Flush closet – With automatic flush responsive means
Patent
1986-12-11
1987-11-24
Phillips, Charles E.
Baths, closets, sinks, and spittoons
Flush closet
With automatic flush responsive means
4304, 4623, E03D 1300
Patent
active
047078677
ABSTRACT:
A toilet-flushing control apparatus comprising a detector, a delay circuit, a judging circuit, a first timer, a second timer, and a flush valve. The detector detects that a person is using a toilet, and outputs a signal. This signal is input to the delay circuit. Upon lapse of a predetermined time after receiving this signal, the delay circuit outputs a signal. The output signal of the delay circuit is supplied to the judging circuit. When the output signal of the detector lasts shorter than a reference time, the judging circuit determines that the toilet user has urinated. Conversely, when this signal lasts for the reference time or a longer time, the judging circuit determines that the toilet user has defecated. In the first case, the first timer is operated, and the flush valve opens for the time set to the first timer, thereby flushing the toilet. In the second case, the second timer is operated, and the flush valve opens for the time set to the second timer, thus flushing the toilet. The time set to the first timer is shorter than that set to the second timer. Hence, the toilet is flushed with a small amount of water after each urination, and with a large amount of water after each defecation.
REFERENCES:
patent: 2603794 (1952-07-01), Bokser
patent: 3575640 (1971-04-01), Ishikawa
patent: 3863196 (1975-01-01), Hilles
patent: 4309781 (1982-01-01), Lissau
patent: 4651777 (1987-03-01), Hardman
patent: 4667350 (1987-05-01), Ikenaga et al.
Iwasaki Tetsuo
Kawabe Ryoichi
Kozuru Hiroshi
Matsunaga Masakazu
Nakasima Matao
F.M. Valve Manufacturing Co., Ltd.
Phillips Charles E.
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