Writing instrument

Details Writing instrument Writing instrument

1994-12-16

1996-09-03

Bratlie, Steven A.

Coating implements with material supply

Projectable and retractable tool

By screw mechanism

401109, 401110, B43K 712, B43K 2406

Patent

active

055517889

ABSTRACT:
A writing instrument with an advance-retract mechanism is operable by rotation of a knob opposite the writing tip. The knob rotates a shaft disposed in, and extending rearwardly from, the instrument body to advance and retract the writing tip when rotated. A retainer member has a first cylindrical portion with a plurality of inwardly extending tangs into which the shaft is received and a larger cylindrical portion having a surface directed toward the instrument body.

REFERENCES:
patent: 3205864 (1965-09-01), Young
patent: 3436160 (1969-04-01), Lanoie
patent: 5342135 (1994-08-01), Tucker

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