Position indicator for a material handling element of a machine
AssigneeDresser Industries, Inc.
InventorEzzat A. Hammoud
Life of this patent
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Abstract
A mobile material handling machine includes a material handling element and an operator's control cab. A plate is pivotally attached to the material handling element in line with the operator's line of sight from the cab towards the element. The plate has first indicia on the edges thereof; second indicia on the top surface thereof; and third indicia on the bottom surface thereof. The first indicia is in line with the operator's line of sight when the material handling element is positioned at a predetermined angle relative to the operator's cab.
Claims4
In a mobile material handling machine including a material handling element and an operator's control station which provides a line of sight between an operator positioned thereat and the material handling element, the improvement comprising:
- a plate having an edge and an upper surface and a lower surface and being pivotally attached to said material handling element in line with the operator's line of sight from said station toward said element, said plate having first indicia means on its edge, second indicia means on its top surface and third indicia means on its bottom surface, said first indicia means being in line with the operator's line of sight when said material handling element is positioned at a predetermined angle relative to said operator's control station, said second or third indicia means being in line with the operator's line of sight when the material handling element is inclined relative to said predetermined angle in respectively first or second directions.
Dependencies are inferred from the claim text.