Coffee maker
US4759274A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Dec 12, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/106
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A coffee maker includes a housing which supports a fresh water container above a receptacle for the coffee. A resistive heating element is mounted in the container to heat the water. The bottom of the container is provided by a downwardly sloping element having an outlet to release heated water to a filter vessel which is releasably connected to the bottom element by a bayonet lock. The filter vessel has an upper rim which is pressed toward an annular shoulder on the underside of the bottom element to create a seal, so that a bubble forms beneath the bottom element when coffee is being brewed. The upper side of the bottom element has arms which mount a temperature-sensitive bimetallic snap element over the outlet. A resilient stopper is mounted on the snap element and is raised from the outlet by the snap element when the water is hot enough for coffee.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.