Railways – Tubular way – Internal service device
Patent
1997-02-06
1998-08-11
Le, Mark Tuan
Railways
Tubular way
Internal service device
B61B 1300
Patent
active
057912556
ABSTRACT:
A robotic vehicle for travel through a conduit. The robotic vehicle includes forward and rear housings each having a hub portion, and each being provided with surface engaging mechanisms for selectively engaging the walls of the conduit such that the housings can be selectively held in stationary positions within the conduit. The surface engaging mechanisms of each housing includes a plurality of extendable appendages, each of which is radially extendable relative to the operatively associated hub portion between a retracted position and a radially extended position. The robotic vehicle also includes at least three selectively extendable members extending between the forward and rear housings, for selectively changing the distance between the forward and rear housings to effect movement of the robotic vehicle.
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Le Mark Tuan
Lockheed Martin Energy Systems, Inc.
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