Ball point pen

Details Ball point pen Ball point pen

1981-06-12

1983-03-22

Coughenour, Clyde I.

Coating implements with material supply

Projectable and retractable tool

Projection by movement of implement

401100, 401104, 401209, 24 11R, B43K 712

Patent

active

043773494

ABSTRACT:
A ball point pen has a cartridge which can be projected by orienting the front end of a ball point pen main body downward and which can be retracted by orienting the front end of the main body upward. A weight with a notch or the like is mounted to the cartridge to shift the overall center of gravity of the cartridge and the weight from the axis of the main body. This allows complete engagement of the distal end portion of the cartridge with an engaging step formed inside the main body, so that accidental retraction of the cartridge back into the main body may be prevented during writing.

REFERENCES:
patent: 2029767 (1936-02-01), Eisenhauer
patent: 2644212 (1953-07-01), Markowitz
patent: 2813511 (1957-11-01), Kersten
patent: 2913789 (1959-11-01), Loredo
patent: 3097406 (1963-07-01), Yarborough
patent: 3507149 (1970-04-01), Copeland
patent: 3638280 (1972-02-01), Di Spirito
patent: 4176979 (1979-12-01), Saida

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