Combination light pen
US6238057A · kind A · utility
12Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2000 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K29/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A combination light pen, which includes an upper barrel, a pen cap and a connector fastened to top and bottom ends of the upper barrel, a LED and battery circuit assembly mounted in the upper barrel, a push-button switch mounted in the pen cap and operated to turn on/off the LED, a transparent lower barrel fastened to the connector to hold an ink cartridge and a transparent conical socket, wherein the lower barrel comprises a water chamber disposed around the ink cartridge, a liquid filled in the water chamber, and display items floating in the liquid inside the water chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.