Mine roof support and attachment means therefor
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United States of America Patent
Stats
-
Aug 12, 1986
Grant Date -
N/A
app pub date -
Oct 22, 1984
filing date -
Oct 22, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Attachment means are provided for attaching a mine roof support to an abutment, (e.g. a flexible conveyor) the attachment means comprising a ram arrangement in the form of at least two rams 25, 26 operable to effect relative movement between the mine roof support and the abutment. The provision of two or more rams instead of the conventional single ram means that smaller bore rams may be used, for example a 60 mm bore as opposed to 41/4 inch bore and this makes it possible to cover or encase the rams in a protective shield without reducing the vertical space available to a miner underneath the mine roof support.
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Cited Art Landscape
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