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:
Jun. 05, 1984
Filed:
Jan. 26, 1982
Bruce W Bradshaw, Ludington, MI (US);
Robert N Clive, Ludington, MI (US);
Jackson Jordan, Inc., Ludington, MI (US);
Abstract
A railroad track tamper control system of the type wherein the grade rail is jacked relative to a reference line, the level rail is cross leveled to the grade rail before tamping, and the tamper frame is relatively independent of the jacking; in which a cross level sensor is mounted on the main tamper frame to free it from jacking vibrations and vertical position sensors measure the jacked elevations of both the grade and level rails relative to the tamper frame. The system cross levels the level rail by comparing the elevation of the grade and level rails relative to the tamper frame and adjusting that comparison by any out-of-cross level of the frame sensed by the cross level sensor.