Patent SG-11201408363X-A (SG)
Title: Hybrid metal fan blade
Inventor: DEAL JAMES L
IPC: F01D5/14
Filed: 2013-06-20
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 11 December 2014 (11.12.2014) WIPOIPCT (10) International Publication Number WO 2014/196987 A2 (51) International Patent Classification: F01D 5/14 (2006.01) F04D 29/38 (2006.01) F01D 5/28 (2006.01) (21) International Application Number: PCT/US2013/046819 (22) International Filing Date: 20 June 2013 (20.06.2013) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 13/529,979 21 June 2012 (21.06.2012) US (71) Applicant: UNITED TECHNOLOGIES CORPORA­ TION [US/US]; One Financial Plaza, Hartford, Connectic­ ut 06101 (US). (72) Inventors: DEAL, James L.; 82 Crouch Road, Amston, Connecticut 06231 (US). SCHIRRA, John J.; 126 Win­ dermere Avenue, Ellington, Connecticut 06029 (US). DROZDENKO, Lee; 84 Wyndwood Drive, Bristol, Con­ necticut 06010 (US). GRAVES, William R.; 38 Lydall Street, Manchester, Connecticut 06042 (US). HANSEN, James O.; 57 Needletree Lane, Glastonbury, Connecticut 06033 (US). WEISSE, Michael A.; 64 Autumn Drive, Tolland, Connecticut 06084 (US). WATSON, Thomas J.; 139 Wood Pond Road, South Windsor, Connecticut 06074 (US). (74) Agents: CRAGGS, Brian T. et al.; 312 South Third Street, Minneapolis, Minnesota 55415-1028 (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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, SC, [Continued on next page] (54) Title: HYBRID METAL FAN BLADE 52A- 34A- CJ l> oo o\ 0\ (57) Abstract: A fan blade comprises an airfoil portion and sheath a portion. The sheath portion has a sheath head section, a first sheath flank, and a second sheath flank, both flanks extending chordwise from the forward sheath section. The sheath portion is bonded to the airfoil portion such that the sheath head section covers the forward airfoil edge, defining a blade leading edge. The first sheath flank covers a portion of the first airfoil surface proximate the airfoil forward edge, jointly defining a blade suction sur­ face. The second sheath flank covers a portion of the second airfoil surface proximate the airfoil forward edge, jointly defining a blade pressure surface. The first metallic material is an aluminum alloy containing between about 0.5 wt% and about 3.0 wt% of lithium. o CJ o & WO 2014/196987 A2 I lllll llllllll II llllll III III lllll llll lllll lllll lllll III III lllll lllll llll llll lllllll llll llll 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, 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). Published: — without international search report and to be republished upon receipt of that report (Rule 48.2(g))