Optics: measuring and testing – Inspection of flaws or impurities – Bore inspection
Patent
1984-03-26
1987-04-21
Willis, Davis L.
Optics: measuring and testing
Inspection of flaws or impurities
Bore inspection
350527, G02B 2324
Patent
active
046592210
ABSTRACT:
The present invention relates to an endoscope for the examination of the interiors of lightening holes in gas turbine engine blades. A light beam is projected toward a beam splitter and reflected by the beam splitter into the lightening hole for illumination of the hole. An observation lens system is arranged to allow an observer to view the illuminated hole through the beam splitter.
REFERENCES:
patent: 3285122 (1966-11-01), Buchbinder et al.
patent: 3661440 (1972-05-01), Takahashi
patent: 3761186 (1973-09-01), Wason
patent: 3892494 (1975-07-01), Baker et al.
patent: 4305661 (1981-12-01), Pryor et al.
Titan Product brochure, "Titan Zoom-A-Bore", Titan Tool Supply Company, Inc., Buffalo, N.Y., Jan. 1975.
Donaldson Charles W.
Kellie Truman F.
Manley Mark B.
Motz Teresa M.
General Electric Company
Koren Matthew W.
Lawrence Derek P.
Welte Gregory A.
Willis Davis L.
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