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公开(公告)号：US3612193A
公开(公告)日：1971-10-12
申请号：US3612193D
申请日：1969-08-11
Applicant: KAJIMA CORP
Inventor： HIRATA SHIGERU
CPC classification number: E21B21/00 , E02F3/9231 , E02F3/9237 , E21B7/001
Abstract: A drilling machine for forming a vertical hole having an oblong and somewhat rectangular horizontal cross section in the earth, comprising a supporting frame housing a driving means which drives a horizontally arranged auger which is supported by the supporting means and comprises two spiral screw threads coaxially arranged and completely symmetrically formed with respect to each other. The supporting means supports a soil-sucking pipe means at its bisected branches arranged over both extremities of the auger and is provided with bits under the branches, respectively.
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公开(公告)号：DE1942857A1
公开(公告)日：1970-04-23
申请号：DE1942857
申请日：1969-08-22
Applicant: KAJIMA CORP
Inventor： HIRATA SHIGERU
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Patent Agency Ranking
公开(公告)号：JPS62284863A
公开(公告)日：1987-12-10
申请号：JP12814686
申请日：1986-06-04
Applicant: KAJIMA CORP
Inventor： TSUKIHASHI KAZUNOBU , TANAKA NOBUO , KUMAZAWA TSUTOMU , HIRATA SHIGERU
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公开(公告)号：JPS5385902A
公开(公告)日：1978-07-28
申请号：JP16072276
申请日：1976-12-30
Applicant: KAJIMA CORP
Inventor： KATAUE KIMIMASA , HIRATA SHIGERU , MATSUURA KIYOYUKI , SHIMIZU MASAKI
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公开(公告)号：JPH0346630B2
公开(公告)日：1991-07-16
申请号：JP12814686
申请日：1986-06-04
Applicant: KAJIMA CORP
Inventor： TSUKIHASHI KAZUNOBU , TANAKA NOBUO , KUMAZAWA TSUTOMU , HIRATA SHIGERU
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公开(公告)号：JPH0151636B2
公开(公告)日：1989-11-06
申请号：JP9406782
申请日：1982-06-03
Applicant: KAJIMA CORP
Inventor： KATAUE KIMIMASA , HIRATA SHIGERU , MATSURA KYOYUKI , SHIMIZU MASAKI , KAWAZU HIROFUMI , HASHIMOTO TOMOYASU
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公开(公告)号：JPS58213984A
公开(公告)日：1983-12-13
申请号：JP9406782
申请日：1982-06-03
Applicant: Kajima Corp
Inventor： KATAUE KIMIMASA , HIRATA SHIGERU , MATSUURA KIYOYUKI , SHIMIZU MASAKI , KAWAZU HIROFUMI , HASHIMOTO TOMOYASU
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