Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1979-02-23
1981-08-25
Crane, Daniel C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
295642, 295647, 2940213, 51141, 51217R, B23P 1504, B23P 600, B24B 2114, B24B 2116
Patent
active
042851084
ABSTRACT:
A method and apparatus for restoring airseals on gas turbine blades and vanes. A worn or damaged airseal is removed by abrasive belt grinding perpendicular to its length to create a stub. Then a piece of material is joined to the stub, as by welding. Next the airseal weldment is contoured using abrasive belting, perpendicular to the weldment length.
The invention is particularly advantageous for the repair of components having two airseals of different dimensions. A single two-position fixture is usable to remove old airseals and to refinish airseal weldments. Refinishing is accomplished with a contoured belt; the contour is chosen to be intermediate, but within the tolerance of, the contours of the first and second airseals. As a result, airseals are economically restored in short runs.
REFERENCES:
patent: 812317 (1906-02-01), Wysong
patent: 2431822 (1947-12-01), Murray
patent: 3685219 (1972-08-01), Palmenberg
patent: 3885291 (1975-05-01), DiChiara
patent: 3969848 (1976-07-01), DeMusis
patent: 3984212 (1976-10-01), DeMusis
patent: 3988126 (1976-10-01), DeMusis
patent: 4016683 (1977-04-01), Cretella
patent: 4028788 (1977-06-01), DeMusis
patent: 4078337 (1978-03-01), Chiasson et al.
Crane Daniel C.
Nessler C. G.
United Technologies Corporation
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