1975-10-20
1978-06-20
Taylor, Dennis L.
61 45R, 61 84, E21D 1304
Patent
active
040954340
ABSTRACT:
An elongated frame provides a track over a mining machine for a carriage which is hauled along by an endless chain. The carriage carries assembled crown roof support sections to adjacent the newly exposed rock boundary.
REFERENCES:
patent: 2757515 (1956-08-01), Wilbur et al.
patent: 3377105 (1968-04-01), Wallers
patent: 3410098 (1968-11-01), Winberg
patent: 3558193 (1971-01-01), Howarth
patent: 3561223 (1971-02-01), Tabor
patent: 3678694 (1972-07-01), Haspert
patent: 3885397 (1975-05-01), Fujimori
patent: 3905645 (1975-09-01), Bland
Hunter Rodney James Anthony
Plummer Derek
Coal Industry (Patents) Limited
Taylor Dennis L.
Wray James C.
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