Patent ID: 8684618
Filing Date: 2014-04-01
Classification: B43K

Abstract:
1. A two-side writing fountain pen, comprising: an ink output means; and a holding means which is provided for fastening the ink output means, said ink output means comprising: a pen nib member comprising a pen nib flake and a pen tip granulation element formed at the tip of the pen nib flake, wherein the pen tip granulation element is formed with a pen tip front contact section, a pen tip back contact section, and an ink output passage communicating with the pen tip front contact section and the pen tip back contact section, and the pen nib flake is provided with an ink guiding passage communicating with the ink output passage, wherein the opening angle of the ink output passage of the pen tip back contact section is approximately between 0°20′0″ to 0°30′0″; and a feed member comprising an ink input section and an ink output section, said ink input section being provided within the holding means, and the ink output section connecting with the ink guiding passage of the pen nib flake.