Coating implements with material supply – Projectable and retractable tool – With movable closure or gate
Patent
1984-02-24
1985-09-10
Bratlie, Steven A.
Coating implements with material supply
Projectable and retractable tool
With movable closure or gate
401108, B43K 900
Patent
active
045403007
ABSTRACT:
A retractable capless marking pen using an oil ink or an aqueous ink, having a retractable writing member consisting of a small diameter portion and a large diameter portion, and having a constitution capable of preventing the evaporation of the ink by storing the writing head of the writing member hermetically within a sealed elastic cylinder. The constitution comprises a fixed pressing protrusion provided within the sheath, an elastic cylinder enclosing part of the small diameter portion of the writing member, an elastic pressing member having a slanting surface adapted to engage the pressing protrusion and adapted to squeeze the open end of the elastic cylinder as the slanting surface engages the pressing protrusion when the writing member is moved toward the retracted position so that the writing head of the writing member is stored hermetically within the elastic cylinder between the closed front end of the elastic cylinder and the rear end thereof and is sealed by sealing means after the writing head of the writing member has been retracted fully into the sheath.
REFERENCES:
patent: 3525573 (1970-08-01), Fend
patent: 3945734 (1976-03-01), Woodbridge
Bratlie Steven A.
Kotobuki & Co. Ltd.
Toyo Polymer Co., Ltd.
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