United States Patent [19]

United States Patent [19] Asari et al.

[11] Patent Number:

[45] Date of Patent: 4,720,256

Jan. 19, 1988

{54] HOT ISOSTATIC PRESS APPARATUS

[75] Inventors: Akira Asari, Ohsaka; Tsuneharu Masuda; Masanori Kurita, both of Kobe; Tsuneya Ueno, Hyogo, all of Japan

[73] Assignee: Kabushiki Kaisha Kobe Seiko Sho, Kobe, Japan

[21] Appl. No.: 751,593 [22] Filed: Jul. 3, 1985

[30] Foreign Application Priority Data Jul. 10, 1984 [JP] Japan .............................. .. 59-143809 Sep. 19, 1984 [JP] Japan .............................. .. 59-197492 Sep. 19, 1984 [JP] Japan .............................. .. 59-197493 Nov. 12, 1984 [JP] Japan .... .. 59-171400[U] Nov. 13, 1984 [JP] Japan . . . . . . . . . .. 59239090

Nov. 13, 1984 [JP] Japan .................. ., .......... .. 59-239089

[51] Int. cu .............................................. .. B30B 9/28 [52] US. Cl. ............................... .. 425/405 H; 419/49;

425/73; 425/78 [58] Field of Search ..................... .. 425/73, 74, 77, 78,

425/210, 169, 170, 405 H, 405 R, 436 RM, DIG. 200, DIG. 201; 419/49; 73/40.5 R, 45.4

[56] References Cited U.S. PATENT DOCUMENTS

3,319,292 5/1967 Witkin .......................... .. 425/405 H 3,677,674 7/ 1972 Bowles ......................... .. 425/405 H

INSERTING POSITION

3,832,107 8/1974 Cox et a1. ............................ .. 425/78 3,988,088 10/1976 King et a1. . . . . . . . . . . .. 425/73

4,161,957 7/1979 Schoellkopf 73/4115 R 4,537,569 8/1985 Asari et al. ................... .. 425/405 H

FOREIGN PATENT DOCUMENTS

1370297 10/1974 United Kingdom 425/405 H 984683 12/1982 U.S.S.R. .... .. 425/78

1079359 3/1984 U.S.S.R. ............................... .. 425/78

Primary Examiner-Jay H. Woo Assistant Examiner-J. Fortenberry Attorney, Agent, or Firm-Oblon, Fisher, Spivak, McClelland & Maier

[57] ABSTRACT A hot isostatic press apparatus wherein a material to be processed such as preliminarily shaped metal powder is charged into a high pressure vessel provided with a heater and the material to be processed is pressed by superhigh pressure of ?uid or gas sealed into the vessel and heating by a heater. The apparatus includes a main station including a high pressure vessel, a movable cover, a member for moving the material to be pro cessed; one or more auxiliary stations including an in serting station, a preheating station, a removing station, etc.; a sealed tank; and transfer mechanisms for the material to be processed. The apparatus also includes a seal leakage detector.

24 Claims, 79 Drawing Figures

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United States Patent [19]

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