Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1984-11-09
1987-03-31
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
1041382, H04N 718, B61B 1310
Patent
active
046547029
ABSTRACT:
A light-weight, portable, pipe crawler vehicle includes a four-wheeled chassis, with the sets of wheels along the opposite sides of the chassis being respectively driven by two hydraulic motors. A foldable mast is removably pivotally mounted on the chassis and carries a pneumatic cylinder which, when the mast is in its erected position, forces bearing wheels against the opposite side of the pipe to force the chassis wheels into firm frictional engagement with the pipe so that it can traverse vertical pipe sections while remaining under control. The dimensions of the vehicle are such that when the mast is folded the vehicle will fit through a 16"-diameter manway of a nuclear steam generator vessel. The chassis also carries a three-axis remote manipulator and one or two remotely-controlled video cameras. A position indicator including a star wheel and proximity sensor is disposed for rolling engagement with the pipe to sense distance travelled.
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Havoic-Conroy Stephanie M.
Smith Edward H.
Tolino Ralph W.
Britton Howard W.
DePaul L. A.
Westinghouse Electric Corp.
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