The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 28, 1992
Filed:
Mar. 22, 1991
Applicant:
Inventor:
Robert C Day, Bristol, GB;
Assignee:
Northern Telecom Europe Limited, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358100 ; 738658 ;
Abstract
A method of inspecting a water pipeline while the pipeline is full of water comprises providing a liquid-tight casing housing a video camera and lights, coupled to a cable housing both optical and electrical conductors. A drogue is attached to the casing and the camera pod and drogue are launched through the sidewall of the pipeline via a launch chamber. The camera pod and cable are neutrally buoyant and can be deployed several kilometers along the pipeline for inspecting the pipeline and recovered again into the launch chamber. The advantage of this system over conventional systems is that much longer lengths of pipeline can be inspected from a single location.