| Patent Number |
Title Of Patent |
Date Issued |
| 5158341 |
Method of steering a mining machine |
October 27, 1992 |
| A method of steering a double-ended ranging drum type mining machine. The method includes the steps of positioning a first current cut follower at or substantially adjacent the center of the machine. A second previous cut follower is positioned at or substantially adjacent the center of |
| 5116103 |
Method of steering a mining machine |
May 26, 1992 |
| A method of steering a double-ended ranging drum mining machine including the steps of positioning a first current cut roof follower at or adjacent the center of the machine and measuring the machine tilt by a second sensor. The coal thickness is estimated by using a third sensor and the |
| 5106162 |
Method of steering a mining machine |
April 21, 1992 |
| A method of steering a double-ended ranging drum mining machine includes the steps of positioning two previous cut roof followers spaced apart longitudinally of the machine, measuring machine tilt using a second means, estimating coal thickness using third means and generating algori |
| 4976495 |
Method and apparatus for steering a mining machine cutter |
December 11, 1990 |
| The trailing drum of a double-ended ranging drum shearer is steered in a seam by producing an algorithm which determines, as a result of information derived from signals from the machine dependant on its tilt, direction and amount of movement along a face being cut. The height of the |
