Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means
Patent
1995-09-06
1997-06-03
Neuder, William P.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
With mine roof-supporting means
F21D 906
Patent
active
056346921
ABSTRACT:
A turnable tunnel excavator and tunneling method are provided which can alternate between construction of a main tunnel A and crosscuts B, and can excavate other tunnels without having to pass through an arc. It is comprised of a main machine and an ancillary machine housed inside a pivotable housing within the said main machine and how to operate such a machine.
REFERENCES:
patent: 5051032 (1991-09-01), Bessho et al.
Exhibit 1, copy of photograph of tunnel-boring machine, date unknown.
Sterling, Underground Research: Here And There, Civil Engineering, Dec. 1992.
Itoh et al, Development of Vertical-Horizontal Shield Machine, Tunneling and Ground Conditions, 1994.
Bessho Toshihiko
Inoue Toshihumi
Kaneko Kenichi
Sugiyama Masahiko
Uchiyama Yoshihiro
Mitsubishi Jukogyo Kabushiki Kaisha
Neuder William P.
Taisei Corporation
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