Head intake for tunnelling machine

Details Head intake for tunnelling machine Head intake for tunnelling machine

1986-09-17

1988-03-22

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With mine roof-supporting means

299 1, 405144, E21D 908

Patent

active

047324279

ABSTRACT:
Apparatus for tunnelling through soil, in which a cutting head is rotatably mounted on a housing and atmospherically sealed from the housing. A muck ring is located in the housing to collect loose soil through an opening into the chamber of the muck ring and the opening is closable to maintain a pre-set earth pressure in the cutting head.

REFERENCES:
patent: 3561223 (1971-02-01), Tabor
patent: 3961825 (1976-06-01), Lovat
patent: 3967463 (1976-07-01), Grandori
patent: 4167289 (1979-09-01), Ono et al.
patent: 4311344 (1982-01-01), Akesaka
patent: 4406498 (1983-09-01), Akesaka
patent: 4607889 (1986-08-01), Hagimoto et al.

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