Electric heating – Heating devices – Resistive element: igniter type
Patent
1989-03-14
1990-02-27
Walberg, Teresa J.
Electric heating
Heating devices
Resistive element: igniter type
219275, H05B 312, F22B 128
Patent
active
049038508
ABSTRACT:
A vaporizing device, preferably in the form of an inhaler, for directing steam in a downstream direction to the region of a user's face. A steam generating and control section includes a cup member for receiving a liquid to be vaporized, and a heater means is provided in a recess of the cup member for heating the liquid to generate steam. The generated steam is directed through a hood section attached to the steam generating and control section for directing the steam in a downstream direction to a user's face. The steam generating and control section includes at least one air-inlet slot for permitting ambient air to enter the device, an exit slot for permitting steam to exit the device, and an adjustable valve assembly downstream of the cup, air-inlet slot and exit slot to adjust the volume and velocity of steam flowing into the hood section. In a preferred form of the invention the heating of the liquid is controlled to cause vaporization only in a region adjacent raised walls defining a recess in the bottom wall of the cup member, and not in the region adjacent an outer peripheral wall of the cup member.
REFERENCES:
patent: 1930038 (1933-10-01), Crowley
patent: 1998327 (1935-04-01), McGuire
patent: 3139885 (1964-07-01), Hirtz
patent: 3695267 (1972-10-01), Hirtz
patent: 3949743 (1976-04-01), Shanbrom
Frank Bernard
Greenberg Melvin B.
Frank Bernard
Walberg Teresa J.
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