Structure of a ballpoint pen with extensible closing top

Details Structure of a ballpoint pen with extensible closing top Structure of a ballpoint pen with extensible closing top

2005-07-26

2005-07-26

Huynh, Khoa D. (Department: 3751)

Coating implements with material supply

Projectable and retractable tool

Manually reciprocable sleeve

C401S105000, C401S104000

Reexamination Certificate

active

06921225

ABSTRACT:
A ballpoint pen with extensible closing top structured to include a spring pen top, a handhold, an extensible pen body, a cap and a pen refill, wherein the extensible pen body embodies a two-stage configuration. Furthermore, a butt pin is configured interior of the cap, which penetrates interior of the extensible pen body and the handhold, and butts against a rear end of the spring pen top. When not in usage, a front section of the spring pen top covers the internal pen refill, and thus the pen refill is not exposed, whereas directly pulling backward on the extensible pen body thereby exposes the pen refill. Usage of the ballpoint pen is thus made considerably convenient.

REFERENCES:
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patent: 544533 (1895-08-01), Harpfer
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patent: 6773185 (2004-08-01), Hsieh
patent: 6832868 (2004-12-01), Hertwig et al.

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