Three-wheeled adjustable vehicle

Details Three-wheeled adjustable vehicle Three-wheeled adjustable vehicle

1983-10-11

1985-07-02

Reese, Randolph A.

Railways

Tubular way

Internal service device

105365, 2503581, 378 60, B61B 1310

Patent

active

045261067

ABSTRACT:
A motor driven vehicle for traversing the interior of a pipe or conduit comprises a pair of arms pivoted to each other at one pair of ends, a drive wheel the axle of which may coincide with the pivot, a swiveling wheel carried at the other end of each arm and a spring positioned to pull the arms toward each other so that the dimension of the vehicle across a pipe is automatically maximized. The vehicle thus tends to position itself on the longest axis of any cross section of the pipe. The drive wheel may be constructed with rim segments which rotate about axes tangent to the means circumference of the rim.

REFERENCES:
patent: 2897779 (1959-08-01), Perkins
patent: 3044749 (1962-07-01), Dilday
patent: 3064127 (1962-11-01), Green et al.

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