Electric sharpener
US4050487A · kind A · utility
16Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1975 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Dec 18, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43L23/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An electric sharpener is disclosed, wherein its sharpener section is driven by a motor powered from a self-contained battery in an arrangement that said motor and a reduction means for transmitting the revolving force of said motor to said sharpener section are housed in an inner case movable relative to an outer case in the lengthwise direction and the electrical connection between said self-contained battery and said motor is controlled by moving said inner case in said lengthwise direction with a pencil inserted into said sharpener section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.