Railways – Tubular way – Internal service device
Patent
1989-01-23
1991-01-01
Oberleitner, Robert J.
Railways
Tubular way
Internal service device
210170, 405128, 417234, B61B 3110, E02B 100, B09B 100, F04B 2100
Patent
active
049810804
ABSTRACT:
To remove leachate collection in a drainfield under a landfill site with an inclined pipe conduit connected to a main leachate collection conduit pipe, the access pipe opening to the surface with a discharge flexible hose with a submersible pump on the end in carriage device including a housing attached around the submersible pump with two pairs of wheels freely and rotatably attached to the housing with the wheels angled outwardly and rotating in planes which intersect on a line parallel to the longitudinal center line of the housing, the line being above the housing and proximate the center line of the pipe conduit.
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patent: 4119210 (1978-10-01), Desourdy
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patent: 4363594 (1982-12-01), Morin
patent: 4439062 (1984-03-01), Kingsbury
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patent: 4624604 (1986-11-01), Wagner et al.
patent: 4635559 (1987-01-01), Nelson
Lennox Thomas A.
Oberleitner Robert J.
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