| Title of Invention | "A TAMPER-PROOF LOCKING SYSTEM FOR SECURELY FIXING FISH PLATES ON RAILWAY LINES, DEVICE FOR RELEASING THE LOCKING SYSTEM AND METHOD OF LOCKING AND RELEASING THE SAME" |
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| Abstract | Accidents due to loosening or tampering of the fish-plates on railway lines are avoided by the present invention which provides a locking-system comprising (1) an attachment (1) for holding nut locking device,which is a metal plate with a plurality of holes (3) to allow bolts of railway fish-plates to pass through the said holes for slide fit and to be secured in place with nuts/washers,the said attachment being provided with projections at regular intervals and (ii)a nut locking cap(8) with a plurality of holes /provided in such a way that it is capable of being fitted flush onto the nut heads of railway fish-plates and protrusions of attachment. This invention also relates to a device for releasing the above locking system which is a pulling jack (9) provided with a threaded bolt (11)at the centre and carrying four other smaller bolts (10). the subject invention also provides a method of producing tamper-proof locking on railway fish-plates and a method of releasing the said locking system. |
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358-kol-2003-granted-abstract.pdf
358-kol-2003-granted-claims.pdf
358-kol-2003-granted-correspondence.pdf
358-kol-2003-granted-description (complete).pdf
358-kol-2003-granted-examination report.pdf
358-kol-2003-granted-form 1.pdf
358-kol-2003-granted-form 18.pdf
358-kol-2003-granted-form 2.pdf
358-kol-2003-granted-form 3.pdf
358-kol-2003-granted-form 5.pdf
358-kol-2003-granted-letter patent.pdf
358-kol-2003-granted-priority document.pdf
358-kol-2003-granted-reply to examination report.pdf
358-kol-2003-granted-specification.pdf
358-kol-2003-granted-translated copy of priority document.pdf
| Patent Number | 201772 | |||||||||
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| Indian Patent Application Number | 385/KOL/2003 | |||||||||
| PG Journal Number | 11/2007 | |||||||||
| Publication Date | 16-Mar-2007 | |||||||||
| Grant Date | 16-Mar-2007 | |||||||||
| Date of Filing | 11-Jul-2003 | |||||||||
| Name of Patentee | PROTIP KUMAR CHATTERJEE | |||||||||
| Applicant Address | S.M.BOSE ROAD, AGARPARA, DIST. 24 PARGANAS(N). | |||||||||
Inventors:
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| PCT International Classification Number | E 01 B 11/38 | |||||||||
| PCT International Application Number | N/A | |||||||||
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PCT Conventions:
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