Resarch And Development   Die Temperature Control Congress Paper for the 20th International Die Casting Congress and Exposition. November, 1999. W.Bishenden, R.Bhola. U.S. Patent #5,865,241 Die Casting Machine with Precisely Positionable Obliquely Moving Die Core Pieces. U.S. Patent #5,701,947 Die Cast Mould Apparatus, a.k.a. "Camlock". For more information on these patents go to the US PATENT & TRADEMARK OFFICE