Vacuum coffee maker
US5892204A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1997 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Mar 17, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/047
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum coffee maker has a starved electric heating arrangement having a solid body providing a reservoir. The chamber is covered by a circular lid that prevents flow of steam directly vertically up a tube from the chamber. At the end of a normal heating cycle, the temperature of the body rises rapidly and power supplied to a heating element is automatically turned off under the control of a thermostat. The heating arrangement is used without alteration (e.g. to the setting of the thermostat) to keep-warm hot coffee in a lower container after the end of the normal heating coffee-making cycle. The effect of having the lid is that during a keep-warm function, the reservoir is generally starved of liquid because any liquid entering the reservoir is immediately evaporated and this restricts flow of more liquid into the reservoir and hence starves the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.