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Contour measurement systemA measurement system for measuring the departures from a straight line of discrete track sections of a track along a coal face in a mine employing a vehicle having a pair of spaced wheel assemblies which align with the track is presented. A reference arm pivotally connects between the wheel assemblies, and there is indicating means for measuring the angle of pivot between the arm and each of the wheel assemblies. The length of the device is less than the length of a track section, and thus when one of the wheel assemblies is on one track section and one is on an adjoining track section, the sum of the indicated angles will be indicative of the angle between track sections. Thus, from the length of a track section and angle, the departure of each track section from the line may be calculated.
Document ID
19790018268
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Currie, J. R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Kissel, R. R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Deaton, E. T., Jr. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Campbell, R. A. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 3, 2013
Publication Date
June 5, 1979
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
Patent Number: US-PATENT-4,156,971
Patent Application Number: US-PATENT-APPL-SN-848418
Patent Number: NASA-CASE-MFS-23726-1
Accession Number
79N26439
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,156,971|NASA-CASE-MFS-23726-1
Patent Application
US-PATENT-APPL-SN-848418

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