Method and apparatus for excavating a tunnel or gallery face
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 11, 1984
Grant Date -
N/A
app pub date -
Jan 27, 1983
filing date -
Jan 29, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of excavating a tunnel face in which the cutting head is sunk into the face to form an initial penetration and is then moved laterally. The power consumption of the cutting head drive motor is measured, compared with the setpoint value and the attack increment is controlled accordingly. The arm carrying the cutting head is swung at a maximum swing moment but the swing moment is reduced when monitored distortion of machine parts shows that this distortion has exceeded a predetermined value.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully