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. 06, 1991
Filed:
Feb. 09, 1990
John K Kesler, Silver Spring, MD (US);
William L Jordan, Washington, DC (US);
Ensco, Inc., Springfield, VA (US);
Abstract
The crosslevel measuring adapter includes a battery-powered electronic level sensor, a processor unit, a display, and data, display and power switches mounted in a housing through which an inclination measuring bar passes. The adapter unit may be mounted anywhere intermediate the ends of the bar which engage spaced railroad tracks during a measurement cycle. When the power switch is activated, the adapter initiates a zero mode to determine an automatic zero offset value to be automatically applied to subsequent crosslevel measurement values. The adapter calculates warp and crosslevel index values from a plurality of crosslevel measurements, and if the warp or crosslevel index values exceed respective threshold levels, automatic display of the value is initiated. Otherwise, measured crosslevel values are automatically displayed and calculated values are displayed by activation of the display switch.