Rotary cutter for extracting hard rock
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United States of America Patent
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-
Jan 3, 1995
Grant Date -
N/A
app pub date -
Aug 23, 1993
filing date -
Jul 13, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A disc-shaped rotary cutter for continuous excavation of hard mineral rock layers according to the invention includes a supporting element having a plurality of end faces and a plurality of cutting elements formed on a circumference of the supporting element and the plurality of end faces. According to the invention, the rotary cutter provides a cylindrical compressive strength of equal to or greater than 20 MPa.
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Cited Art Landscape
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