Abstract: A method for aligning measured track data collected from a railroad track to correct geographic location information for geometric parameters in the measured track data includes steps for (a) obtaining track geography data for use as reference data in data alignment; (b) reconstructing the track geography data to simulate in form and in coverage of length the measured track data to be aligned, (c) comparing the reconstructed reference data to the measured track data to identify a relative misalignment value between the data types; and (d) using the value identified through comparison to correct the geographic location information contained in the measured track data.
Type:
Grant
Filed:
April 10, 2003
Date of Patent:
October 12, 2004
Assignee:
Tata Consultancy Services (Division of Tata Sons, LTD)
Abstract: This invention relates to application of eco-friendly starch solution as a quenching medium for heated metal parts fabricated from steel, alloy steel, aluminum and aluminum alloys. Depending on the material grade, critical temperature and desired cooling rate, various types of starch solution can be used and the composition and concentration of the starch quenchant can be tailored to provide the required cooling characteristics for wide range of materials. In particular the starch solutions have the potential to replace quenching oil. The starch solutions are environmentally friendly, having no toxic fumes and no after usage disposal liabilities as compared to oil fumes.
Type:
Grant
Filed:
January 2, 2002
Date of Patent:
February 10, 2004
Assignee:
Tata Consultancy Services, division of Tata Sons LTD