Title:
Tunnelling machine shield having fluid circulating bulkhead and rotary cuting head
United States Patent 3334945
US Patent References:
/0360959.html
- - 0360959
Hydraulic earth boring and cyclone separation system
- - 2941783
Process for producing excavations in water-bearing ground
- - 3260054
Method and apparatus for continuously mining and transporting coal
- - 3260548
/0360959.html
- - 0360959
Hydraulic earth boring and cyclone separation system
- - 2941783
Process for producing excavations in water-bearing ground
- - 3260054
Method and apparatus for continuously mining and transporting coal
- - 3260548
Inventors:
Bartlett, John V.
Publication Date:
08/08/1967
View Patent Images:
Export Citation:
Assignee:
MOTT HAY & ANDERSON
Primary Class:
Other Classes:
299/18, 299/56, 405/144
International Classes:
E21D9/08; E21D9/12; E21D9/13
Foreign References:
| DE1136361B | ||||
| GB934996A | ||||
| SU143416A |