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In-vehicle automated falling weight deflectometer to provide non-destructive evaluation of strength of highway and airfield pavements. It is also useful for testing of bridges and other like applications. The in-vehicle falling weight deflectometer comprise a load-deflection measuring unit having a load cell, geophone assembly, loading plate with rubber sole at its lower face such that for deflection measurement said rubber sole extend beyond the vehicle floor and press against the road surface; means to raise the vehicle wheels above ground and lowering of the geophone assembly to rest on the ground with geophones pressed against the road surface ; a releasably secured falling weight adapted to fall on said pad as and when the deflection measurement is required ;means for monitoring the signals from the load cell upon impact of the falling weight ;means for monitoring the signals from the geophones and generating the deflection measurement values based thereon. The above in-vehicle automated falling weight deflectometer would provide for a more precise and effective measure of the strength of road and airport pavement to enable estimation of remaining strength and forecast appropriate strengthening measure using mechanistic approach well ahead of failure condition. Importantly the system would enable identification of deficiency in every layer of pavements more accurately. The deflectometer is easily transported from one place to another and thus favour its application and end use. Moreover, the deflectometer is adapted to use power for running hydraulic pump is derived from the vehicle engine itself thereby avoiding need for a battery operated D.C. Motor and pump. The device is simple and easy to handle/use and also cost effective.
Notices, Deadlines & Correspondence
Patent Information
Applicants
INDIAN INSTITUTE OF TECHNOLOGY
Inventors
1. PANDEY PROF. B. B.
2. REDDY PROF. K. S.
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 551-cal-2001-granted-specification.pdf | 2011-10-06 |
| 2 | 551-cal-2001-granted-reply to examination report.pdf | 2011-10-06 |
| 3 | 551-cal-2001-granted-pa.pdf | 2011-10-06 |
| 4 | 551-cal-2001-granted-letter patent.pdf | 2011-10-06 |
| 5 | 551-cal-2001-granted-form 3.pdf | 2011-10-06 |
| 6 | 551-cal-2001-granted-form 2.pdf | 2011-10-06 |
| 7 | 551-cal-2001-granted-form 19.pdf | 2011-10-06 |
| 8 | 551-cal-2001-granted-form 1.pdf | 2011-10-06 |
| 9 | 551-cal-2001-granted-drawings.pdf | 2011-10-06 |
| 10 | 551-cal-2001-granted-description (complete).pdf | 2011-10-06 |
| 11 | 551-cal-2001-granted-correspondence.pdf | 2011-10-06 |
| 12 | 551-cal-2001-granted-claims.pdf | 2011-10-06 |
| 13 | 551-cal-2001-granted-abstract.pdf | 2011-10-06 |
| 14 | 00551-cal-2001-p.a.pdf | 2011-10-06 |
| 15 | 00551-cal-2001-form-3.pdf | 2011-10-06 |
| 16 | 00551-cal-2001-form-2.pdf | 2011-10-06 |
| 17 | 00551-cal-2001-form-19.pdf | 2011-10-06 |
| 18 | 00551-cal-2001-form-1.pdf | 2011-10-06 |
| 19 | 00551-cal-2001-drawings.pdf | 2011-10-06 |
| 20 | 00551-cal-2001-description(complete).pdf | 2011-10-06 |
| 21 | 00551-cal-2001-correspondence.pdf | 2011-10-06 |
| 22 | 00551-cal-2001-claims.pdf | 2011-10-06 |
| 23 | 00551-cal-2001-abstract.pdf | 2011-10-06 |
| 24 | 551-CAL-2001-FORM-27.pdf | 2013-06-28 |
| 25 | 551-CAL-2001-(24-03-2015)-FORM-27.pdf | 2015-03-24 |
| 26 | 195777-Form 27-290316.pdf | 2016-06-27 |
| 27 | Form 27 [29-03-2017(online)].pdf | 2017-03-29 |