Optics: measuring and testing – Inspection of flaws or impurities – Bore inspection
Patent
1993-01-27
1994-11-15
McGraw, Vincent P.
Optics: measuring and testing
Inspection of flaws or impurities
Bore inspection
738665, G02B 2326
Patent
active
053653319
ABSTRACT:
An apparatus for holding an insertion tube of a borescope centered within a passage along which the borescope travels, that includes a pair of opposed collar assemblies slidably mounted upon the insertion tube of the borescope, with each collar assembly including a cylindrical body section and an annular retaining ring, being removably mounted in face-to-face contact with one end face of the body section, and each retaining ring having a rear end face in contact with one body section and a front end face facing that of the retaining ring on the opposing collar assembly, and each retaining ring further including a series of circumferentially spaced rotor seats each having a longitudinally disposed slot passing through the outer wall of the ring, and a plurality of elongated wire spring members with each end fitting in a rotor seat, thus joining the opposing collar assemblies, where one of the collar assemblies is held in a stationary position adjacent to the distal viewing end of the borescope while the other collar assembly may be slid along the borescope insertion tube so that the wire spring members maintain contact with the passage in which the borescope travels.
REFERENCES:
patent: 2371176 (1945-03-01), Kirk et al.
patent: 2587476 (1952-02-01), Huhn
patent: 3517128 (1970-06-01), Hines
patent: 4418572 (1983-12-01), Prange
patent: 4843896 (1989-07-01), Napeloni et al.
Knieriem Alan S.
Leseberg Roger
Smith Timothy J.
Tamburrino Richard A.
McGraw Vincent P.
Welch Allyn Inc.
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