Ballpoint pen with a ball bearing of shape memory alloy

Abstract

A ballpoint pen has an ink reservoir tube which stores ink, a point assembly disposed in the front of the ink reservoir tube, and a ball bearing held at the front end of the point assembly. The ball bearing is a shape memory alloy, preferably a TiNi intermetallic compound or a TiNi based alloy. The ball bearing solves the problem of ink failing to flow when the ballpoint pen is dropped on the ground.

Dependencies are inferred from the claim text.