Writing instrument for erasing handwritten content
AssigneeCrown Ballpen Co., Ltd.
InventorsYoung Saeng Park, Bae Jo Park
Life of this patent
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Abstract
A writing instrument having a removal function of a handwritten content is provided where a tip erasing body that erases incorrectly written words or pictures is formed on the outer peripheral surface of a lower body, and the tip erasing body and the lower body are formed by a double injection molding method. An integrated one body prevents any form of gap between the tip erasing body and the lower body. Since the tip erasing body is integrally made with the lower body, when a user wants to erase incorrect contents, an unstable state like a conventional product can be overcome.
Claims6
A writing instrument having a removal function of a handwritten content, comprising:
- a housing having a hollow tub shape;
- an ink filling tube containing an adhesive ink inside the housing;
- a ballpoint pen tip making the adhesive ink flow on paper P to write words W;
- and a knock cap ascending or descending the ink filling tube and the ballpoint pen tip in a vertical direction,
- wherein, a lower body of the housing consists of a single tube, and forms a tip erasing body onto an outer surface of the lower body;
- the tip erasing body is a part of the lower body, and is formed by double injection mold on the outer surface of the lower body, resulting in a single integrated body with the lower body;
- a first synthetic resin component of the tip erasing body forms a chemical bond with a second synthetic resin component of the lower body, while the tip erasing body is bonded to the outer surface of the lower body, wherein the first synthetic resin component of the tip erasing body is made of a hard compound resin;
- and
- wherein the tip erasing body does not contain any form of gap when forming a binding relationship with the lower body.
Dependencies are inferred from the claim text.