Nitinol Engines (1992)

Simple heat engines using Nitinol have been demonstrated since the 1973, when Ridgway Banks produced the first working engine at Lawrence Laboratories in Berkeley, California. Getting Warmer: The Nitinol Engine

by Ridgway Banks

Mr. Banks, an independent machinist and inventor in Point Richmond, California, develops novel heat engines using a peculiar alloy called Nitinol. The unwitting ancestor of the Nitinol Engine was one of a series of “nonsense machines” I’ve made over the years as presents for children — or for no particular reason.

Source: free-energy.ws