Vaporizing device
US4903850A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1989 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Mar 14, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/16
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.