Patent ID: 6109333
Filing Date: 2000-08-29
Classification: B22C

Abstract:
A method of manufacturing a housing frame for use in an electromechanical machine, said method comprising steps of:(a) providing a pattern form in a configuration of a housing frame, said pattern form being made of a cast dissolvable material and defining a first axial length greater than a second axial length of said housing frame, the difference between said first axial length and said second axial length being an axial portion of said pattern form;(b) removing said axial portion of said pattern form equal to a difference between said first axial length and said second axial length to yield respective end portions and adhering said end portions of said pattern form back together;(c) situating said pattern form in a particulate casting medium;(d) inserting molten metal into said particulate casting medium to displace said pattern form and fill a space that had been occupied thereby; and(e) after said molten metal has cooled to rigidity, removing said housing frame from said casting medium.