EP 0129099 B1 19880107 - INK SUPPLY SYSTEM FOR WRITING DEVICES WORKING WITH LIQUID INK
Title (en)
INK SUPPLY SYSTEM FOR WRITING DEVICES WORKING WITH LIQUID INK
Publication
Application
Priority
DE 3321301 A 19830613
Abstract (en)
[origin: US4634305A] An ink supply system for writing instruments which operate with liquid ink. The writing instrument has a large-volume ink reservoir which communicates via a recharge valve with a small-volume ink reservoir which is adjacent to the writing element. The transmission of ink from the large-volume ink reservoir to the secondary reservoir is controlled by a sensor as a function of the quantity of ink which is present in the secondary ink reservoir. In order to simplify the recharging of the ink, and to be able to operate with the least possible electrical energy, the present invention utilizes as a recharge valve a tube pump which is rotatably driven by an electric motor and also generate the pressure necessary to convey the ink to the secondary ink reservoir.
IPC 1-7
IPC 8 full level
B05B 11/00 (2006.01); B43K 5/10 (2006.01); B43K 5/18 (2006.01); B43K 7/03 (2006.01); B43K 7/10 (2006.01); B43K 8/02 (2006.01); B43K 8/22 (2006.01)
CPC (source: EP US)
B05B 11/0035 (2013.01 - EP US); B43K 5/189 (2013.01 - EP US); B43K 8/22 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0129099 A2 19841227; EP 0129099 A3 19850417; EP 0129099 B1 19880107; AT E31679 T1 19880115; DE 3321301 A1 19841213; DE 3468380 D1 19880211; JP S6011399 A 19850121; US 4634305 A 19870106; US 4708506 A 19871124
DOCDB simple family (application)
EP 84105960 A 19840525; AT 84105960 T 19840525; DE 3321301 A 19830613; DE 3468380 T 19840525; JP 12007984 A 19840613; US 62016284 A 19840613; US 90587886 A 19860910