Patent ID: 6149330
Filing Date: 2000-11-21
Classification: B43K

Abstract:
A building block type writing instrument, comprising:a plurality of tubular writing units, each writing unit having a front end and a rear end, a writing implement disposed at the front end, and a receiving hole in the rear end;at least one coupling unit having an axial direction and being engaged in the axial direction with at least one of the writing units;each writing unit including a tubular projection at its front end in which the writing implement is disposed and a receiving hole at its rear end adapted to be coupled with a tubular projection of another writing unit, each writing unit further including on its outer circumferential surface at least one engaging projection and at least one matching coupling groove adapted to receive an engaging projection of another writing unit and extending in an axial direction of the writing unit;the at least one coupling unit including a block having a block front end and a block rear end, at least one of the block front end and the block rear end having a block tubular projection adapted to be received in the receiving hole on the rear end of one of the writing units, and a block side between the block front end and the block rear end having at least one block tubular projection adapted to be received in the receiving hole on the rear end of one of the writing units extending therefrom.