Railways – Tubular way – Internal service device
Patent
1998-12-16
2000-09-26
Morano, S. Joseph
Railways
Tubular way
Internal service device
B61B 1310
Patent
active
061230278
ABSTRACT:
A running apparatus within a pipe runs such that a center axis of a main body of the running apparatus is automatically coincided with a center axis of the pipe during running, and smoothly runs within a curved pipe. The running apparatus comprises two pairs of wheel supporting arms (3a, 3a', 3b, 3b') having an end rotatably fixed to an end portion of the main body (1) of the running apparatus, a wheel for driving the running (5) fixed to each of the other ends of two pairs of wheel supporting arms and rotated by a drive mechanism (a motor), an interlocking mechanism (a slider and a link) provided with a spring for urging two pairs of wheel supporting arms to which the wheels for driving the running are fixed in such a manner as to open around the one end of the main body of the running apparatus, a rotational potentiometer for measuring an angle of incline of each of two pairs of wheel supporting arms so as to output a data of an angle of incline and an attitude control portion (20) for returning an attitude of the main body of the running apparatus to a normal attitude state by controlling the drive mechanism on the basis of the data of the angle of incline with respect to each of two pairs of wheel supporting arms output from the rotational potentiometer.
REFERENCES:
patent: 3089434 (1963-05-01), Andreasen
patent: 4055315 (1977-10-01), Gvelesiani et al.
patent: 4722001 (1988-01-01), Rohrich et al.
patent: 5142989 (1992-09-01), Suzumori et al.
patent: 5375530 (1994-12-01), Zollinger et al.
patent: 5749397 (1998-05-01), Molaug
Ido Yoshio
Kawabe Toshihide
Mizukami Seiji
Suyama Kiichi
CXR Corporation
Morano S. Joseph
Olson Lars A.
Tokyo Gas Co. Ltd.
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