Opening and closing device for retractable nib fountain pen
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United States of America Patent
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-
Dec 24, 1985
Grant Date -
N/A
app pub date -
Nov 12, 1982
filing date -
Nov 20, 1981
priority date (Note) -
Expired
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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.
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