Global Patent Index - EP 1004457 A1

EP 1004457 A1 2000-05-31 - 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 (EN)

Application

EP 99309360 A

Priority

JP 33258898 A

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 (main, further and additional classification)

B43K 5/18

IPC 8 full level (invention and additional information)

B43K 1/08 (2006.01); B43K 5/18 (2006.01); B43K 7/08 (2006.01)

CPC (invention and additional information)

B43K 5/1845 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

EP 1004457 A1 20000531; JP 2000158871 A 20000613

INPADOC legal status


2003-11-05 [R18D] EP-APPLICATION DEEMED TO BE WITHDRAWN: (CORRECTION)

- Effective date: 20020603

2003-01-02 [D18D] EP-APPLICATION DEEMED TO BE WITHDRAWN: (DELETED)

2002-12-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020601

2001-02-14 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE FR IT

2000-11-02 [R17P] REQUEST FOR EXAMINATION FILED (CORRECTION)

- Effective date: 20000801

2000-09-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000801

2000-05-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR IT

2000-05-31 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI