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US 5,013,091 AGranted
Method of indirect measurement of cowl position on a longwall shearer
AssigneeConsolidation Coal Company
InventorsStephen L. Bessinger, Michael G. Nelson
Life of this patent
Estimating the term…
Abstract
The position of the cowl on a longwall shearing machine is determined by loads, stresses or deflections measured on the ranging arm, clevis and pin connection on the ranging arm or lift cylinder and its linkage to the machine.
Claims3
In a longwall shearer having a cowl rotatably supported on a ranging arm, said ranging arm pivotably supported on the shearer by apparatus including a clevis pin and a lift cylinder, the method of determining the rotated position of the cowl on the ranging arm by sensing the load on at least a portion of said apparatus.
Dependencies are inferred from the claim text.