Push-button writing instrument with front seal means

Coating implements with material supply – Projectable and retractable tool – With movable closure or gate

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Details

401108, B43K 900

Patent

active

046182802

ABSTRACT:
A push-button type writing instrument is constructed of a refill received within a barrel slidably in the axial direction, a writing part receiving mechanism provided at a forward end portion of the refill, and sealing means provided with the writing part receiving mechanism for sealing a writing part. Owing to the provision of the sealing means, the ink of the writing instrument is kept free from evaporation and flow while the writing part is received within the barrel.

REFERENCES:
patent: 2291859 (1942-08-01), Andrews
patent: 3525573 (1970-08-01), Fend
patent: 3637316 (1972-01-01), Bross
patent: 3945734 (1976-03-01), Woodbridge
patent: 4540300 (1985-09-01), Midorikawa

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