Global Patent Index - EP 1004457 A1

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

EP 1004457 A1 20000531 (EN)

Application

EP 99309360 A 19991124

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

B43K 5/18

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)

Citation (search report)

Designated contracting state (EPC)

DE FR IT

DOCDB simple family (publication)

EP 1004457 A1 20000531; JP 2000158871 A 20000613

DOCDB simple family (application)

EP 99309360 A 19991124; JP 33258898 A 19981124