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Double seal system for pressurized writing device

A technology for writing devices and sealing elements, which is applied to writing utensils, devices for applying liquid to surfaces, applications, etc., can solve problems such as internal pressure changes, affecting the uniform flow of writing media, and achieve the effect of optimal writing effect.

Inactive Publication Date: 2006-10-11
SOC DITE SOC BIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This combination often results in internal pressure variations that affect the uniform flow of the writing medium

Method used

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  • Double seal system for pressurized writing device
  • Double seal system for pressurized writing device
  • Double seal system for pressurized writing device

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] turn to figure 1 , which shows an embodiment of a writing device 10 constructed in accordance with the present invention, it should be understood that those skilled in the art can modify and replace various elements therein.

[0017] Writing instrument 10 generally includes a body 12 partially filled with ink 14 . Writing device 10 may stand alone as a writing implement, or may act as a refill inserted into a sleeve or writing implement housing. Body 12 may be formed primarily of a rigid polymer or plastic material, such as nylon, acrylonitrile, butadiene, styrene terpolymer, or similar materials. The main body 12 has a substantially uniform cylindrical shape along the length direction of its inner wall 13 , and gradually tapers toward the first end 16 . On the first end 16 is formed a nib or tip 18 through which an ink tip 19 is disposed. At a second end 20 opposite the first end 16 is an opening 22 through which a first or primary sealing element 24 is inserted. T...

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PUM

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Abstract

A writing device (10) generally includes a cylindrical body (12) with uniform thickness, and a part of writing medium, such as ink (14), is filled in the cylindrical body. A writing point (19) is inserted into the first end (16) of the body (12), and a first sealing member (24) is inserted into the second end (20) of the body (12). A first sealing element (24) is in the body (12), proximate to the second end (20). A pressurized gas, such as nitrogen (26), is disposed within the body (12), between the ink (14) and the first sealing member (24). Alternatively, a gas generating means may be provided in the body (12) to continuously generate gas as the ink (14) is consumed, thereby maintaining the pressure therein. A second sealing member (28) is inserted into the second end (20) of the body (12) to provide a double seal gas pressurization system.

Description

technical field [0001] The present invention relates generally to pressurized writing devices, and more particularly to gas pressurized writing devices. Background technique [0002] Pressurized writing instruments have been used for many years. A pressurizing device is incorporated into a writing instrument to improve and maintain a continuous flow of ink to the tip of the writing instrument when the writing instrument is operated in a horizontal or inverted position for extended periods of time. Furthermore, the use of pressurizing means in the writing instrument reduces the need for violent shaking to initiate ink flow for storing only partially emptied pens or refills in an inverted position. [0003] In writing instruments using highly volatile solvents, pressurized systems have been used to reduce solvent loss and are also required in applications where highly viscous inks are used to force the ink towards the writing tip. [0004] Mechanical and chemical pressurizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43K7/08B43K5/02A46B5/02B05C17/00B43K7/00B43K7/02B43K5/00B43K7/03
CPCB43K7/03B43K7/08
Inventor R·S·鲁坎B·W·查德维克
Owner SOC DITE SOC BIC
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