EP 1004457 A1 20000531 - Ball-point pen including a ball ink valve
Title (en)
Ball-point pen including a ball ink valve
Title (de)
Kugelschreiber mit Tintenkugelventil
Title (fr)
Stylo à bille comprennant une valve d'encre à bille
Publication
Application
Priority
JP 33258898 A 19981124
Abstract (en)
A ball-point pen or pen refill is provided that is particularly suitable for use with gel ink (16) or other low viscosity inks or inks including highly volatile solvents. The pen includes a tip assembly having a ball housing (36) that retains the ball (40) of the pen whilst allowing the ball to move back from the ball seat under writing force. The ball is forced against the ball seat by a single piece, plastic valve member (46). The valve member includes a compression spring (60) and pin (74) which pushes the ball against the ball seat, and a rear stop (48) that is used to positively locate the valve member with respect to the ball seat to ensure correct force is generated through compression of the spring. The result is a pen that writes smoothly, and that by using a one piece valve member is easily and economically manufactured. <IMAGE>
IPC 1-7
IPC 8 full level
B43K 1/08 (2006.01); B43K 5/18 (2006.01); B43K 7/08 (2006.01)
CPC (source: EP)
B43K 5/1845 (2013.01)
Citation (applicant)
- US 5969004 A 19991019 - LOFTIN RACHEL M [US]
- US 5951188 A 19990914 - LOFTIN RACHEL M [US]
- US 5466281 A 19951114 - HANKE DAVID E [US], et al
- US 5048992 A 19910917 - LOFTIN RACHEL M [US]
- US 5013361 A 19910507 - CASE LAURA K [US], et al
- US 4971628 A 19901120 - LOFTIN RACHEL M [US]
- US 4786198 A 19881122 - ZGAMBO THOMAS P [US]
- US 4686246 A 19870811 - GAJRIA CHANDRASEN [US]
- US 4671691 A 19870609 - CASE LAURA K [US], et al
- US 4545818 A 19851008 - INOUE SHIGEYASU [JP], et al
Citation (search report)
- [X] DE 3044223 C1 19811224 - SLABY JOCHEN, et al
- [X] DE 29912893 U1 19990916 - SCHNEIDER SCHREIBGERAETE GMBH [DE]
- [X] CH 274548 A 19510415 - SOCINA GMBH [CH]
- [A] EP 0331843 A1 19890913 - ANDRADE RUYMAR
- [A] EP 0257931 A1 19880302 - SHAH PERVEEN [GB], et al
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 99309360 A 19991124; JP 33258898 A 19981124