Television – Special applications – Hazardous or inaccessible
Reexamination Certificate
2006-08-15
2006-08-15
Rao, Andy (Department: 2613)
Television
Special applications
Hazardous or inaccessible
C348S084000, C348S085000
Reexamination Certificate
active
07092004
ABSTRACT:
The invention relates to an arrangement for inspecting sewer pipes or the like. The arrangement comprises a flush unit (8) that has ample room to move in a sewer pipe (10) and at the proximal end (EP) thereof substantially backwards pointing nozzles (18), a flexible flush hose (9) and liquid pressurizing means (20) in order to create a flow of the pressurized liquid (VH) through the nozzles to the sewer pipe. In addition, the arrangement comprises a camera unit n (1) including: a fish-eye lens or another lens, and in front of the lens a rotation symmetrical curved mirror, these constituting optical image forming means (5), a number of radially outwards pointed lenses in order to create an image of the circumferential zone (Ki) on the inner surface of the sewer pipe; an image detector and illumination means (2). Further the arrangement includes automatic locking means (4a, 4b) for a mutual, detachable fastening of the camera unit (1) and the flush unit (8) successively in order to form a scanner combination (13), so that the optical image forming means (5) are located at the distal end (ED) of said combination.
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JP-11-114513, (**English translation).
Rao Andy
Young & Thompson
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