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US 5,329,132 AGranted
Positioning device with linear scanning and angled code lines
AssigneeElektriciteit voor Goederenbehandeling Marine en Industrie, in her verkort Egemin, naamloze vennootschap
InventorsLeo Van de Pas, Rudi Vanhoutte
Life of this patent
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Abstract
Positioning device equipped with a linear scanning device and at least one support with at least one contrasting code line provided on it. A useful part thereof is directed at an angle other than zero and 90 degrees with regard to the scanning device. At least one extra line forms a line of reference and forms an angle other than zero and 90 degrees with the code line, whereby the relative position of the above-mentioned lines can be read by the scanning device.
Claims23
A positioning device comprising:
- (A) a linear scanning device for scanning in a single linear scanning direction;
- (B) at least one support having:
- (1) at least one contrasting code line provided thereon including a useful part directed at an angle other than 0.degree. and 90.degree. with respect to the scanning direction, and
- (2) at least one extra line forming a reference line and forming an angle other than 0.degree. and 90.degree. with the code line;
- and
- (C) wherein the scanning device outputs a signal representative of the relative position of the code line and the reference line.
3 more elements
Dependencies are inferred from the claim text.