Ball for ball-point pen and ball-point pen
OwnerYoshito Miyasaka, Hitoshi Karasawainventors
Life of this patent
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Abstract
To provide a ball for a ball-point pen and to provide a ball-point pen with the use of it which are superior in abrasion resistance and lubricating ability and can be manufactured easily. A ball 2 for a ball-point pen is made of a material of stainless steel whose surface is formed with a nitrosulphurized layer, or a ball 2 for a ball-point pen is made of a material of aluminum chrome molybdenum steel whose surface is formed with a nitrosulphurized layer. A ball-point pen utilizing such a ball has superior writing qualities.
Claims9
In a spherical ball used in a tip portion of a ball-point pen, the ball is made of a material of stainless steel whose surface is formed of a nitrosulphurized layer.
In a spherical ball used in a tip portion of a ball-point pen, the ball is made of a material of aluminum chrome molybdenum steel whose surface is formed of a nitrosulphurized layer.
Dependencies are inferred from the claim text.