Pencil sharpener
US6886614B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2002 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | May 16, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L23/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A pencil sharpener having a sharpening sub-assembly for sharpening pencils, and first and second external shells having internal ribs defining surfaces for supporting the sharpening sub-assembly. Components of the sub-assembly are placed into corresponding portions defined by the internal ribs. The ribs ensure proper alignment of the components relative to the shell and each other, e.g. in the x- and y-directions. All components may be placed in the shell in a single direction, e.g. in a single axial direction (the z-direction). The components of the pencil sharpener are mounted in place upon fastening together of the first and second external shells. No internal or additional fasteners are required. The sharpening sub-assembly may include an electric motor, a gear assembly, and a cutter assembly including a cutter gear module having an annular ring gear, acting as a carrier support, and housing a pencil insertion switch and/or a receptacle presence switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.