Eraser dispenser and writing instrument equipped with eraser dispenser
US4904101A · kind A · utility
31Cited by
14References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | Mar 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K29/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A writing instrument has an inner barrel defining a compartment for storing writing leads, an outer front barrel encircling a forward portion of the inner barrel and an outer rear barrel encircling a rearward portion of the inner barrel. The outer rear barrel is angularly displaceable about the inner barrel but not axially displaceable relative thereto. An eraser holder is mounted within the rearward portion of the inner barrel and holds an elongate eraser which can be extended and retracted in response to angular displacement of the outer rear barrel in opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.