Patent SG-11201907169W-A (SG)
Title: Coated flange bolt hole and methods of forming the same
Inventor: PARTHASARATHY BALA
IPC: F01D25/28
Filed: 2018-01-17
Abstract: 18 N111 ,16 ) 20 7M1M/01\" _12 FIG. 1 1 11 11 71' 71' 11 00 11 O C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 09 August 2018 (09.08.2018) WIP0 I PCT onion °nolo DID Ho Em O II111110 oimIE (10) International Publication Number WO 2018/144221 Al (51) International Patent Classification: FOlD 25/28 (2006.01) FOlD 25/00 (2006.01) (21) International Application Number: PCT/US2018/014029 (22) International Filing Date: 17 January 2018 (17.01.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/425,257 06 February 2017 (06.02.2017) US (71) Applicant: GENERAL ELECTRIC COMPANY [US/US]; 1 River Road, Schenectady, NY 12345 (US). (72) Inventors: PARTHASARATHY, Bala, Srinivasan; 1 Re- search Circle, Niskayuna, NY 12309 (US). SUNDARARA- JAN, Guruprasad; Plot #122, Export Promotion Industrial Park, Bangalore, Karnataka 560066 (IN). HOLLEY, Evan, Jarrett; 1 Research Circle, Niskayuna, NY 12309 (US). AJDELSTAJN, Leonardo; 1 Research Circle, Niskayuna, NY 12309 (US). (74) Agent: KACHUR, Pamela, A. et al.; General Electric Company, Global Patent Operation, 901 Main Avenue, 3rd Floor, Norwalk, CT 06851 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Declarations under Rule 4.17: — as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: — with international search report (Art. 21(3)) (54) Title: COATED FLANGE BOLT HOLE AND METHODS OF FORMING THE SAME (57) : Methods for repairing flange bolt holes and the resulting flange bolt holes are provided. The methods and products include the incorporation of a coating system comprising a corrosion resistant layer, which can be formed by resistance plug welding, slurry or sol-gel processing, or thermal/cold spray processing. The corrosion resistant layer can be a super alloy or ceramic material and is different than the base material of the flange bolt hole. Corrosion of the flange bolt hole can be reduced or prevented from occurring with the use of the coating system.