Heated basin
US4967061A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1989 |
| Grant date | Oct 30, 1990 |
| Priority date | — |
| Expiry date | Oct 10, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1928
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Apparatus for warming a sterile liquid includes a basin with a heater assembly, a base surrounding the basin, and an electronic temperature controller. The shape of the basin bottom includes an plateau-like elevated central region and a depressed surrounding rim. The heater assembly is of a thin-film type, and provides relatively greater heating in the central region than in the outer region. Both the heater geometry and the shape of the basin bottom promote a natural and uniform convective flow of the liquid to promote mixing of the warmer and cooler portions of the liquid. The temperature controller allows the user to select the temperature that the liquid is to be warmed to, and provides visual and aural indications of liquid or basin temperatures which exceed reasonable pre-set limits. The controller also halts the flow of electrical current to the heater assembly when an overtemperature problem in the liquid or the basin is detected. A disposable cable connects the temperature controller to the basin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.