Opening and closing device for retractable nib fountain pen

Details Opening and closing device for retractable nib fountain pen Opening and closing device for retractable nib fountain pen

1982-11-12

1985-12-24

Bratlie, Steven A.

Coating implements with material supply

Projectable and retractable tool

With movable closure or gate

401108, B43K 900, B43K 516

Patent

active

045602980

ABSTRACT:
A retractable fountain pen employs a cover plate rotatable about a supporting tube by means of a spring to sealingly contact the tapered front end of a cylindrical head portion to close off a central passageway therein. The tube prevents excess deformation of the resilient tapered front end portion.

REFERENCES:
patent: 1809416 (1931-06-01), Liddell
patent: 2092459 (1937-09-01), Kutter
patent: 2957452 (1960-10-01), Brannon
patent: 3292593 (1966-12-01), Furuya
patent: 3362778 (1968-01-01), Pavese
patent: 3399946 (1968-09-01), Tokorozawa et al.
patent: 3427112 (1969-02-01), Yanagisawa et al.

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