Title:
Shield tunneling method and mechanism
United States Patent 3266257
US Patent References:
/0438509.html
- - 0438509

/0794633.html
- - 0794633

/1277107.html
- - 1277107

/1292159.html
- - 1292159

Tunneling apparatus
- - 1338237


Inventors:
Larrouze, Raymond J. L.
Gesta, Pierre F.
Goussault, Pierre J. M.
Winberg, Douglas F.
Robbins, Richard J.
Publication Date:
08/16/1966
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Assignee:
ROBBINS & ASSOC JAMES S
Primary Class:
405/144
Other Classes:
299/31, 277/583, 299/56, 405/146, 405/147
International Classes:
E21D9/06; E21D9/08; E21D9/12; E21D19/00
US Patent References:
1429647Machine for building tunnels and the like
1720195Excavating device
3061282Self sealing charging hopper for high dump mixers
3075591Tunnel boring machines
Foreign References:
FR348743A