Writing instrument with self-closure

Details Writing instrument with self-closure Writing instrument with self-closure

1978-06-26

1980-08-19

Pieprz, William

Coating implements with material supply

Projectable and retractable tool

With movable closure or gate

B43K 2400

Patent

active

042181542

ABSTRACT:
A writing instrument includes a self-closure provided by a plurality of segment members which, when operably disposed, form a protective enclosure for the writing tip and, when not operably disposed, retract within the barrel of the instrument.

REFERENCES:
patent: 350037 (1886-09-01), Bussler
patent: 1580987 (1926-04-01), Alford
patent: 1714965 (1929-05-01), Ullner
patent: 1734784 (1929-11-01), Vierling et al.
patent: 2111767 (1938-03-01), Gimonet
patent: 2590943 (1952-04-01), Coskey et al.
patent: 2591537 (1952-04-01), Gordon
patent: 2941511 (1960-06-01), Cieremans
patent: 3445171 (1969-05-01), Seidler
patent: 3525573 (1970-08-01), Fend
patent: 3583820 (1971-06-01), Koein

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