Mushroom hook cap for borescope

Details Mushroom hook cap for borescope Mushroom hook cap for borescope

1989-12-15

1991-10-01

Rosenberger, Richard A.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

G02B 516

Patent

active

050528033

ABSTRACT:
A flexible borescope for penetrating a passage into an inaccessible area of a jet engine or other device to be visually inspected has an imaging system disposed at its distal tip and conducts the image to a viewing device coupled to a proximal end of the insertion tube. A hooking cap removably attached onto the distal tip of the insertion tube can be controllably latched onto and removed from a projection in the inaccessible area, for example, onto the trailing edge of one of the blades of the rotor. The hooking cap has a circumferential sleeve that overfits the tip and a flange that projects radially outward from the sleeve sufficiently to hook over the projection. The insertion tube carries at least one longitudinal stripe over its operational length to indicate the bending plane of the borescope bendable steering section, so that the operator can judge the orientation of the bending section when the borescope is being inserted into the jet engine or other inaccessible area.

REFERENCES:
patent: 3841764 (1974-10-01), Snell et al.
patent: 4298312 (1981-11-01), MacKenzie et al.
patent: 4848817 (1989-07-01), Hasegawa

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