Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Cast in situ
Patent
1981-12-28
1983-08-23
Leppink, James A.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Cast in situ
425 59, 425 64, E02D 2910, E03F 306, E04G 2112
Patent
active
044001088
ABSTRACT:
A mobile reinforced pipe machine for producing and laying concrete pipe on site in a ditch or the like. The machine comprises a frame structure capable of supporting the machine for movement along a ditch; hydraulically positionable outrigger wheels carried by the frame for machine guidance along the ditch; a pair of rotating nested sleeves with compactor vibrators therebetween which receive solidifiable cementitious material, such as concrete, vibrate the entering mixture to assure uniformity of mix; longitudinal and circumferential reinforcing wire fed between the sleeves for embedding within the solidifiable cementitious material for reinforcing the solidified pipe leaving the machine; plates or slip forms are attached to the frame adjacent the sleeves for receiving and supporting partially solidified pipe as it exits the machine as the machine moves forward; motor and transmission to transport the machine along the ditch and rotate the sleeves. Earth compactors are provided to force backfill under the newly-formed pipe for support.
REFERENCES:
patent: 517808 (1894-04-01), Ransome
patent: 2406025 (1946-08-01), Moor
patent: 3049783 (1962-08-01), Hanson
patent: 3091013 (1963-05-01), Robinson
patent: 3487649 (1970-01-01), Bergstrom
patent: 3792942 (1974-02-01), Cole
patent: 4001358 (1977-01-01), McNeill et al.
patent: 4298296 (1981-11-01), Hanson
Gilliam Frank D.
Leppink James A.
Pistel Nancy J.
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