Method and apparatus for gauging the corsslevel and warp of railroad tracks
US5036594A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1990 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Feb 9, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B2203/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.