The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 1979
Filed:
Dec. 21, 1977
Charles A Shupe, Beaconsfield, CA;
Canron, Inc., New York, NY (US);
Abstract
A track aligning device for monitoring the curvature of a track and adjusting the track successively to correct the curvature incorporates three rods mounted on a car or cars running on the track and pivotably connected together, the rods defining three chords each extending between a pair of spaced points located on the track center line. The angle between the first rods is measured by a transducer which derives a voltage dependent on the magnitude and direction of the angle. This voltage is sampled at equal intervals, say two meters, as the aligning device passes along the track. The voltages are summed and averaged electrically and a voltage equivalent to the mean angle between the first two rods is obtained. The angle between the second two rods is measured by a second transducer which derives a voltage equivalent to the actual angle at a particular position of the track. This voltage is compared electrically with the mean voltage and an error voltage is derived and used to operate a servo-assisted aligning mechanism to adjust the track to the left or right as necessary. The device can also adjust the superelevation of the track to meet the necessary value as computed on the basis of curvature and speed.