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(12)United States Patent Turnquist et al. (54) TURBINE BUCKET COVER AND BRUSH SEAL 4,840,539A*6/1989Bourcieretal............416/191 (75) Inventors: NormanArnoldTurnquist, Sloansville; Lawrence D. Willey, Burnt Hills;ChristopherEdward Wolfe, Schenectady, allofNY (US) (73) Assignee: GeneralElectricCompany, Schenectady,NY (US) JP 5,941,685 A * 8/1999 Bagepalli et al. .. 415/173.3 6,036,437A 3/2000 Wolfeetal...415/173.3 FOREIGN PATENT DOCUMENTS 55023320 A * 2/1980 (*) Notice: Subjecttoanydisclairner,thetermofthis patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days. OTHER PUBLICATIONS RobertC.Hendricksetal.“IntegrityTestingofBrushSeal in Shroud Ring of T—700 Engine”, May 24—27, 1993, pp. 1_11_ * Cited by examiner Primary Examiner—EdWard K. Look AssistantExaminer—RichardWoo (74) Attorney, Agent, or Firm—Enrique Abarca; Donald S. Ingraham (57) ABSTRACT The adjoining edges of bucket covers are sealed one to the other A brush seal projecting from a stationary shroud overlies the bucket covers. A joint at Which the adjacent covers sealingly engage each other precludes radial out?oW of high pressure ?uid into bristles of the brush seal, pre venting radial and axial de?ection of the bristles and con sequent failure of the bristles. The joints betWeen the covers may comprise lap or tongue-and-groove joints. 21 Claims, 7 Drawing Sheets (21) Appl.No.:09/733,293 . (22) Filed: Dec. 11,2000 (51) Int.Cl.7..F01D11/12 (52) US.Cl...415/173.3;415/1735; 415/1736; 415/1742; 415/174.5; 416/191 (58) FieldOfSearch ..415/1733,1735, 415/1736, 1742, 1745, 230, 231; 416/189, 190, 191, 195; 277/412, 416, 421, 355 (56) References Cited U'S' PATENT DOCUMENTS 2,610,823 A * 9/1952 KnoWlton, Jr. ............ 416/190 3,857,650 A * 12/1974 Cerrato ..416/189 US006439844B1 (16)PatentN6.= US 6,439,844B1 (45) Date of Patent: Aug. 27, 2002 3,970,318 A * 7/1976 Tuley ..415/209.2PDF Image | TURBINE BUCKET COVER AND BRUSH SEAL
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