Pressurized cartridge for a writing instrument

Details Pressurized cartridge for a writing instrument Pressurized cartridge for a writing instrument

1980-01-22

1985-02-12

Coughenour, Clyde I.

Coating implements with material supply

Including floating follower in reservoir

401101, 401187, 401190, B43K 700, B43K 710, C09D 1118

Patent

active

044987978

ABSTRACT:
A writing instrument cartridge contains a loose fitting ball follower disposed within the cartridge between an end of a column of paste like ink exhibiting a yield value, and compressed gas contained in a sealed end of the cartridge. The ball follower is adapted to help peel the ink from the tube walls without contact and to prevent the gas from channeling through the ink and escaping from the cartridge past a ball point or nib during writing.

REFERENCES:
patent: 378524 (1888-02-01), Rutherford
patent: 1898844 (1933-02-01), McGaughy
patent: 1965753 (1934-07-01), Scoles
patent: 2427069 (1947-09-01), Randolph
patent: 2584569 (1952-02-01), Frentzel
patent: 3099252 (1963-07-01), Cofield
patent: 3124107 (1964-03-01), Fehling
patent: 3140695 (1964-07-01), Fehling
patent: 3425779 (1969-02-01), Fisher
patent: 3495917 (1970-02-01), Truhan
patent: 3659951 (1972-05-01), Germann
patent: 3775015 (1973-11-01), Tsunoda
patent: 3997273 (1976-12-01), Germann

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