Off-center point marker tip
US5897264A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1997 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Jan 16, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K17/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An improved marker tip for use in a writing instrument and being of the general type formed of a fibrous and porous material. The tip has a generally elongated body of circular cross section and includes conically-shaped marker surfaces on each of its ends. The converging end of each conically-shaped marker surface is positioned slightly off-center with respect to a central axis of the tip such that each marker surface is comprised of a variety of radial marker widths as well as a writing point. All such radial marker widths are inclined at equal angles with respect to the central axis such that the marker tip, and associated writing instrument, may be held at a single angle with respect to a marking surface when drawing lines of varying widths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.