[54] NOZZLE ASSEMBLY FOR DIE CASTING APPARATUS
[75] Inventor: Sydney H. Whitehorn, Birmingham, Mich.
[73] Assignee: VSI Corporation, Pasadena, Calif.
[21] Appl. No.: 779,984
[22] Filed: Aug. 25, 1985
[51] Int. Q." B22D 17/02
[52] U.S. a 164/311; 164/154
[58] Field of Search 164/154, 311, 303, 310,
164/309; 222/593, 592, 591; 219/240, 424, 425, 483, 551, 200, 201, 213, 214, 241, 281, 282, 300, 301, 535, 298; 156/91; 428/621, 632; 277/22,
95, 235 R, 233
[56] References Cited
U.S. PATENT DOCUMENTS
3,009,218 11/1961 Rearwin 164/309
3,789,188 1/1974 Rudbarg 219/298
4,516,782 5/1985 Usher 277/233
FOREIGN PATENT DOCUMENTS
57-62848 4/1982 Japan 222/593
Primary Examiner—Nicholas P. Godici
Assistant Examiner—G. M. Reid
Attorney, Agent, or Firm—Gerald E. McGlynn, Jr.
[57] ABSTRACT
A nozzle assembly for delivering molten metal to a die casting mold comprises a relatively large diameter cylindrical main body section, a relatively small diameter inlet tip section, and a relatively small diameter outlet tip section. Separate heater elements are wrapped around the respective sections and a controller functions to maintain set point body temperatures in each nozzle section in response to signals received from thermocouples separately associated with each nozzle section.
6 Claims, 4 Drawing Figures
