Signal coupling for humidifier container

Details Signal coupling for humidifier container Signal coupling for humidifier container

1989-06-28

1990-04-10

Miles, Tim

Gas and liquid contact apparatus

Contact devices

Liquid tank

116 70, B01F 304

Patent

active

049158791

ABSTRACT:
A hermetically sealed unitary liquid container of a thermoplastic material suitable for use in inhalation therapy is disclosed as having a signal coupling. A cupshaped female connector is adapted to be threaded onto a gas inlet coupling of the container. A stem portion of the female connector defines a signal gas passageway and a flat land. A flexible elastic sleeve occludes the signal gas passageway and lies continuous with the land. When a pressure buildup is experienced within the container, gas pressure will force gas out through the signed gas passageway, and past the sleeve, while generating an audible signal, e.g., a whistling sound.

REFERENCES:
patent: 2918895 (1959-12-01), Buell
patent: 3807445 (1974-04-01), McPhee
patent: 3916818 (1975-11-01), Barr et al.
patent: 4036919 (1977-07-01), Komendowski et al.
patent: 4045525 (1977-08-01), Huggins
patent: 4100235 (1978-07-01), Thornwald
patent: 4134940 (1979-01-01), Sherman
patent: 4247844 (1981-01-01), Zapolski et al.
patent: 4367182 (1983-01-01), Kienholz

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