Self-righting, bi-directional pipe caster

Details Self-righting, bi-directional pipe caster Self-righting, bi-directional pipe caster

2008-03-18

2008-03-18

Morano, S. Joseph (Department: 3617)

Railways

Tubular way

Internal service device

Reexamination Certificate

active

07343863

ABSTRACT:
An apparatus for transporting a payload along the inside of a substantially horizontal pipe. The apparatus includes vertically aligned upper and lower roller elements which are relationally pivotably connected to each other, both of which contact the inside surface of the pipe into which the apparatus is inserted. The apparatus further includes a steering pendulum which enables the apparatus to maintain a substantially vertical orientation as it is pushed or pulled through the pipe.

REFERENCES:
patent: 4526106 (1985-07-01), Okada et al.
patent: 6035786 (2000-03-01), McKay et al.
patent: 6339993 (2002-01-01), Comello et al.

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