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:
Mar. 25, 1986
Filed:
Aug. 19, 1983
Hans P Jaeggi, Lugano, CH;
Jackson Jordan, Inc., Ludington, MI (US);
Abstract
In accordance with the present invention, there is provided a chassis adapted for travel along a railroad rail with the chassis having a plurality of bearing points located between the chassis and the rail for supporting the chassis on the rail and for allowing movement of the chassis over the rail. The bearing points are aligned along a reference line and are at least variably spaced on opposite sides of a sensing point mounted on the chassis. At least one bearing point on each side of the sensing point contacts the rail surface as the chassis moves over the rail. A sensing device is provided at the sensing point for continuously sensing the distance between the reference line and the surface of the rail as the chassis travels along the rail. The sensing device has an output which is a function of the sensed distance between the reference line and the rail surface. A device, such as a strip recorder, is responsive to the output of the sensing device to indicate the corrugations and undulations in the rail surface.