Illumination – With implement or hand held holder therefor – Pen or pencil
Reexamination Certificate
1999-04-20
2001-05-15
Cariaso, Alan (Department: 2875)
Illumination
With implement or hand held holder therefor
Pen or pencil
C362S206000, C250S227120
Reexamination Certificate
active
06231204
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an improved structure for an optic pen, and, more particularly, to an optic pen with a lens wit a toroidal optic ring suitable to be used in a night work environment.
2. Description of the Related Art
Pens are generally used only for writing. Consequently, design variations are generally limited to variations in the texture, color, or the shape of a housing. However, these variations have no special utility. If the light level of the environment is inadequate, then the pen cannot be used. If the pen is used under poor lighting conditions, then writing errors will be induced, resulting in illegibility. One method for solving these problems involves adding an extra light source which is very inconvenient to carry and store. For instance, when a policeman performs his duty at night, if he wants to write on a citation, it is possible that the information on the citation will have some errors. Thus, if the prior art pen is supplemented with its own light source, then the aforementioned problems can be resolved.
With conventional optic pens, an illumination device (such as a bulb) is installed on the distal end of the pen tube. Then, a pen wick is then installed within the hollow space of the pen tube where a curved is formed above the hollow space. The curved portion of the structure has a specific orientation so that light emitting from the illumination portion travels to the front end of the pen tube. However, the aforementioned method has a disadvantage in that the curved portion must be designed to match the size of the inner radius of the pen tube for the light to be reflected to the front end of the pen tube. Therefore, the design of the curved portion must be limited.
SUMMARY OF THE INVENTION
The primary object of the present invention is to provide an improved structure for an optic pen including a pen tube, and an illumination portion in a key cover structure. The illumination portion is installed in the rear end of the pen tube. The front end of the illumination section is fitted with a battery, a light emitting diode, and a bulb or a laser module. The front of the pen tube is made of transparent material and the distal end of the pen tube is installed with a circular, or toroidal, optic lens. The key cover structure is then arranged in the distal end of the pen tube. In the key cover structure, a stepped post extends from the upper end of the contact rod with the cylinder. A spring is located above the cylinder and a pressing barrel covers the spring.
According to the aforementioned structure, when a light source emits light toward the front pen tube, the action of the lens creates a circular focusing ring on the upper end of the transparent pen tube. The light is then refracted through the lens toward the wall of the transparent pen tube. The aforementioned light will then be transmitted to the end of the transparent pen tube without impinging on the pen wick. Moreover, the spring covering the post within the key cover structure will generate a resilient force as the key cover is pressed, so that the key cover is retained in a predetermined position. Therefore, the key cover will not slide upwards or downwards, or vibrate.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawings.
REFERENCES:
patent: 3303337 (1967-02-01), Lo
Bacon & Thomas PLLC
Cariaso Alan
DelGizzi Ronald E.
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