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Compact Hydraulic Excavator and Support UnitContinuous-coal-mining machine maneuverable. Hydraulic coal excavator combined with chock, or roof-support structure, in self-contained unit that moves itself forward as it removes coal from seam. Unlike previous such units, new machine compact enough to be easily maneuverable; even makes small-radius right-angle turns.
Document ID
19850000243
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Lewis, E. V. (Caltech)
Date Acquired
August 12, 2013
Publication Date
October 1, 1985
Publication Information
Publication: NASA Tech Briefs
Volume: 9
Issue: 2
ISSN: 0145-319X
Subject Category
Machinery
Report/Patent Number
NPO-16190
Accession Number
85B10243
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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