Structure for reduced ink evaporation

Details Structure for reduced ink evaporation Structure for reduced ink evaporation

1978-01-25

1980-06-24

Sewell, Paul T.

Coating implements with material supply

Material flows through porous tool

Wick feed from within reservoir to tool

401199, B43K 500, B43K 802

Patent

active

042092639

ABSTRACT:
There is disclosed a writing unit better known as a refill for writing instruments, comprising a cap housing a cartridge composed of an ink accumulating capillary body, and a smaller diameter, greater capillary capacity ink feed member connected between the writing tip and the adjacent end of the capillary body. Air enters the case through a hole axially between the writing tip and the adjacent end of the capillary body and the forward end of a tubular cap sealingly engages the case, the tubular cap covers the portion of the feed member otherwise in contact with the atmosphere and the adjacent end of the capillary body so as to reduce evaporation of ink from capillary parts.

REFERENCES:
patent: 1166896 (1916-01-01), Garvey
patent: 2676349 (1954-04-01), Uosburg
patent: 2784699 (1957-03-01), Sheaffer
patent: 2911949 (1959-11-01), Beckwith
patent: 2957452 (1960-10-01), Brannon
patent: 3113336 (1963-12-01), Langnickel
patent: 3133307 (1964-05-01), Steinberg et al.
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patent: 3355239 (1967-11-01), Albrecht
patent: 3418056 (1968-12-01), Derbins
patent: 3446563 (1969-05-01), Burnham
patent: 3520629 (1970-07-01), Otsuka
patent: 3572954 (1971-03-01), Cheron
patent: 3776646 (1973-12-01), Bich

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