Marking instruments
US5676481A · kind A · utility
12Cited by
36References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1996 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | Jun 11, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB43K5/1845
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A marking instrument, e.g. a fiber tip pen, roller ball pen, or highlighter pen, has a feed device which conducts marking liquid from the reservoir chamber (17) to the marking tip supported by an elastomeric diaphragm (6) which partly confines the reservoir chamber and forms a valve with the feed device so that when tip is applied against a surface the feed device retracts causing the diaphragm (6) to pressurize the liquid in the reservoir and open the valve whereby liquid is pumped to the tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.