Sharpener for an oval pencil
US7036231B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2004 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Aug 15, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L23/08
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sharpener includes a sharpener body, a guide collar and a shaving blade. The guide collar has an oval bore defining a pencil-guiding channel and is mounted on the sharpener body such that it can be rotated essentially about the axis of the pencil-guiding channel. The shaving blade is fastened on a blade holder of the sharpener body to be positioned axially offset in relation to the guide collar and obliquely in relation to the axis of the pencil-guiding channel. A concave guide contour, into which the shaving blade projects by way of a cutting edge is formed on an inner surface of the blade holder adjacent to the pencil-guiding channel. When the pencil positioned in the pencil-guiding channel is rotated in relation to the sharpener body, the axis of the pencil-guiding channel is guided on an essentially oval path in relation to the cutting edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.