Movable casing for the excavation of trenches

Details Movable casing for the excavation of trenches Movable casing for the excavation of trenches

1983-07-29

1985-06-04

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405272, 405282, E02D 1708

Patent

active

045211370

ABSTRACT:
A trenching casing for the continuous excavation and refilling of trenches for the installation of conduits into the ground has spaced side walls consisting of at least upper and lower sections which are longitudinally movably relative to each other and each of which has a rear face plate with a hydraulic advancing cylinder for pushing the respective section forwardly, and the upper and lower sections are interconnected by hydraulic operating cylinders which facilitate the advancing of one of the sections relative to, and guided by, the other section which, meanwhile, remains in a firm position.

REFERENCES:
patent: 3693358 (1972-09-01), Morrice
patent: 3813886 (1974-06-01), Alacchi
patent: 3820345 (1974-06-01), Brecht
patent: 3967454 (1976-07-01), Barnes
patent: 4063425 (1977-12-01), Jutte et al.
patent: 4073151 (1978-02-01), Harmsma
patent: 4143519 (1979-03-01), Unger

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