Propelling mechanism and traveling device propelled thereby

Details Propelling mechanism and traveling device propelled thereby Propelling mechanism and traveling device propelled thereby

1991-09-27

1992-09-01

Bonck, Rodney H.

Railways

Tubular way

Internal service device

378 60, 358100, 346 33P, 475332, 475334, B61B 1310

Patent

active

051429896

ABSTRACT:
A propelling mechanism for traveling through piping comprises: a motive power device; a plurality of sun gears driven in rotation by the motive power device; at least two planet gears meshed with each one of the sun gears and rotatably supported at specifically spaced-apart positions to undergo axial rotation about their own axes and simultaneously to undergo orbital revolution around the periphery of that sun gear; and a plurality of traction wheels with treads rotating together with respective planet gears, the treads being pressed into contact with the inner wall surface by the orbital revolution of the planet gears, driving power due to the axial rotation of the planet gears being transmitted by way of the treads of the wheels as traction to the inner wall surface. A traveling device for operating as a probe to travel through piping with bends and branches is constituted by coupling two of the above described propelling mechanisms to front and rear ends of a flexible mechanism constituting the main body of the device, which is provided with a control device for deflecting the flexible mechanism in steering operation in various directions to navigate smoothly through the piping.

REFERENCES:
patent: 3087058 (1963-04-01), Arvanetakis et al.
patent: 3691385 (1972-09-01), Ketchbaw et al.
patent: 4372658 (1983-02-01), O'Connor et al.
patent: 4526106 (1985-07-01), Okada et al.
patent: 4537136 (1985-08-01), Douglas
patent: 4677472 (1987-06-01), Wood
patent: 4722001 (1988-01-01), Rohrich et al.
patent: 5018451 (1991-05-01), Hapstack

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