Title:
LIQUID INK WRITING PEN
Document Type and Number:
WIPO Patent Application WO2002045973
Kind Code:
A3
Abstract:
An inexpensive writing pen for low viscosity liquid inks and formed with an internal ink reservoir (20) and a capillary system (28) for admitting air into the reservoir. The ink reservoir is formed directly by the walls of the pen body, which form an internal cavity. Transfer of heat from the writer's hand into the region of the ink reservoir is inhibited by providing projection elements (40) and intervening air spaces (41), which form the effective outer surface of the pen body. Preferably, the material of the pen body extends substantially above the upper limits of the internal ink reservoir, and is provided in those upper areas with similar projections and spaces, facilitating transfer of heat from the pen body into the ambient. An improved disign of unitary nib and collector cartridge is also provided.
Inventors:
BRUNETTI BRUCE W
Application Number:
PCT/US2001/051281
Publication Date:
May 15, 2003
Filing Date:
November 13, 2001
Export Citation:
Assignee:
CHARTPAK INC (US)
International Classes:
B43K7/02; B43K7/10; (IPC1-7): B43K5/02
Foreign References:
| US3824023A | 1974-07-16 | |||
| US5056945A | 1991-10-15 | |||
| USD436997S | 2001-01-30 | |||
| USD402312S | 1998-12-08 | |||
| US6371676B1 | 2002-04-16 | |||
| USD403704S | 1999-01-05 |
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