Retractile pen

Details Retractile pen Retractile pen

2000-11-01

2001-08-21

Huson, Gregory L. (Department: 3751)

Coating implements with material supply

Projectable and retractable tool

Including retraction spring and projected-position retainer

C401S109000, C401S112000, C401S113000, C401S117000

Reexamination Certificate

active

06276855

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a retractile pen, and more particularly to a pen including an outer barrel and an inner barrel axially slidably received in the outer barrel, so that the pen could be adjusted to any one of two different lengths as necessary.
There are various types of pens available in the markets. These pens can be generally divided into two categories, namely, office and non-office pens. Office pens usually have regular configurations and are designed mainly for smooth writing in offices and other similar places. The non-office pens usually have novel shapes and are designed mainly for use as giveaways. Either office or non-office pens, they usually have fixed lengths that might be too short to be comfortably held for writing or too long to be conveniently held in, for example, a pocket. It is therefore desirable to have a pen with a length-adjustable barrel, so that the pen may be used either as an office or a non-office pen.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a retractile pen that includes an outer barrel and an inner barrel axially slidably received in the outer barrel. The outer barrel is provided with two axially spaced and aligned stop holes and the inner barrel is provided with an elastically depressible button adapted to partially project from the stop hole. By engaging the button on the inner barrel with different stop holes on the outer barrel so that the inner barrel is fixed in place with different amounts of the inner barrel extended from the outer barrel, the pen can be adjusted to either a longer length to facilitate writing with the pen or a shorter length to facilitate convenient carrying of the pen.


REFERENCES:
patent: 1355026 (1920-10-01), Austin
patent: 1701771 (1929-02-01), Stefano
patent: 4601599 (1986-07-01), Katoh
patent: 5423843 (1995-06-01), Werner

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