Railways – Monorail
Patent
1986-02-18
1988-02-23
Reeves, Robert B.
Railways
Monorail
228 29, 219 60A, E01B 2508
Patent
active
047263008
ABSTRACT:
A track assembly for mounting a welding head assembly onto a pipe for the purpose of welding the pipe. The track assembly includes a flexible annular base which is to be located about the pipe in close proximity to the exterior surface of the pipe but spaced therefrom. Located between the annular base and the pipe are a plurality of spaced-apart foot pad assemblies. Each foot pad assembly includes a pair of contact pads which function to exert a continuous spring force between the annular base and the pipe. Each contact pad is connected to a separate spring assembly which can be mutually adjusted to vary the amount of spring force between the flexible annular base and the pipe. Mounted on the exterior surface of the annular base is a track which is to connect with the welding head assembly upon which the welding head operates to move circumferentially about the pipe. A latching assembly in the form of an over-center latching mechanism is used to secure together the free ends of the annular base.
REFERENCES:
patent: 3084244 (1963-04-01), Rieppel et al.
patent: 3851386 (1974-12-01), Ellzey, Jr.
patent: 3910480 (1975-10-01), Thatcher
patent: 4250813 (1981-02-01), Slavens et al.
Munro Jack C.
Pido John
Reeves Robert B.
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