Title: Shield tunneling machine and method

Abstract: Shield tunneling machine and method which may minimize the variation in water- and earth-pressure at the tunneling face so as to hold the ground firm and to ensure the safe tunneling.

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Inventors: Sugimoto, Yoshihito (Kokubunji, JP)
Miyata, Konosuke (Matsudo, JP)
Ishihara, Kanehiro (Tokyo, JP)
Fujimoto, Sachio (Yachiyo, JP)
Kakutani, Tsunehiro (Kashiwa, JP)

Application Number: 852308
Filing Date: 1977-11-17
Publication_date: 1979-08-21
Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha (Tokyo, JP); Sato Kogyo Kabushiki Kaisha (Toyama, JP)
Primary Class(es): 299/11 299/31, 299/56, 405/141
Other Classes:
US Patent Ref:

1530768	Mar, 1925	Haag	61/85.
3260054	Jul, 1966	Lorenz	61/85.
3334945	Aug, 1967	Bartlett	61/85.
3561223	Feb, 1971	Tabor	299/33.
4040666	Aug, 1977	Uchida	61/84.
4068486	Jan, 1978	Uchida	61/85.
4116487	Sep, 1978	Yamazaki et al.	299/1.

Other Refs: 845252745928

Dec, 1895	DE2
Apr, 1978	DE

Primary Examiner: Pate, III, William
Assistant Examiner:
Attorney: Scrivener, Parker, Scrivener & Clarke