Microfluidic writing pen
US5911533A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Nov 24, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K8/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A microfluidic pen for selectivly writing lines of different colors, includes a colorant mixing chamber and a writing tip in communication with the colorant mixing chamber; a plurality of colorant reservoirs disposed in the pen and which contain different colorants; microkinetic pump selectively effective to deliver colorant in selected amounts from the colorant reservoirs to the colorant mixing chamber wherein the colorants are mixed to provide a colorant of the desired color. The color is selected by a user and actuates the microkinetic pump to cause the desired amount of colorants to be delivered to the colorant mixing chamber where the writing tip can write a line of the desired line colors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.