Coffee grinder
US5058814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Aug 8, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J42/16
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A grinder for coffee beans, comprising a hopper, two grinding burrs arranged for relative rotation about a vertical axis, and a chamber defined by walls including an outer wall and a lower plate, which has two outlets. At each outlet, a flexible blade mounted to such outlet closes such outlet until coffee grounds in the chamber are pressed downwardly with sufficient force to flex the blade. A rotor arranged to sweep in the chamber has portions having inclined faces whereby grounds being swept tend to be downwardly pressed. Each outlet is configured to direct grounds downwardly and radially. The outer wall is relieved to define two spiral configurations countering tendencies of the grounds to rotate as an annular mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.