Gas and liquid contact apparatus – Contact devices – Reciprocating
Patent
1983-12-02
1986-01-07
Miles, Tim
Gas and liquid contact apparatus
Contact devices
Reciprocating
73308, 219333, 261DIG48, B01F 304
Patent
active
045633134
ABSTRACT:
An air humidifier includes a water level detector that detects the water level in the water reservoir, and first and second light-emitting elements. The first and second light-emitting elements are selectively energized to emit light in response to whether the water level detected by the water level detector is at or above or below a predetermined level so as to permit quick visual inspection of the relative water level in the reservoir.
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patent: 3490697 (1970-01-01), Best, Jr.
patent: 3852380 (1974-12-01), Wiseman
patent: 4086812 (1978-05-01), Luthe et al.
patent: 4102191 (1978-07-01), Harris
patent: 4238425 (1980-12-01), Matsuoka et al.
patent: 4480469 (1984-11-01), Tice
Miles Tim
Tokyo Shibaura Denki Kabushiki Kaisha
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