EP 0220487 B1 19890104 - WRITING INSTRUMENT
Title (en)
WRITING INSTRUMENT
Publication
Application
Priority
DE 3538077 A 19851025
Abstract (en)
[origin: US4759651A] The cap for the writing instrument comprises a jacket mounted slidably on a sealing insert or sleeve which provides a sealed moisture chamber for the writing tip when the cap is on the writing instrument. Near the writing tip there is a circular bulge on the shaft of the writing instrument which enters into a sealing engagement with an interior passage of the sealing insert. On putting the cap on the writing instrument the sealing insert is pushed over the circular bulge until it contacts a contacting stop on the jacket. Then the circular bulge presses tightly into the sealing insert and it locks the jacket to the writing instrument so that the entire arrangement is kept in that position until the cap is removed. A signal slider is attached with the sealing insert which is extendable out from the end of the jacket in order to signal in its extended position the proper seating of the cap on the writing instrument. Erroneous indications of a sealed state are prevented with our invention.
IPC 1-7
IPC 8 full level
B43K 23/12 (2006.01); G09F 23/00 (2006.01)
CPC (source: EP US)
B43K 23/128 (2013.01 - EP US); G09F 2023/0016 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
US 4759651 A 19880726; AT E39648 T1 19890115; DE 3538077 C1 19861218; DE 3661603 D1 19890209; EP 0220487 A1 19870506; EP 0220487 B1 19890104
DOCDB simple family (application)
US 92230486 A 19861023; AT 86113030 T 19860922; DE 3538077 A 19851025; DE 3661603 T 19860922; EP 86113030 A 19860922