Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1988-01-15
1990-05-29
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
405129, 405258, E02D 518
Patent
active
049291262
ABSTRACT:
For installing a screen of flexible material in the soil, a trench is dug in the soil and the screen is fed into the trench. To provide a method in which the sagging or dragging along of the screen by the collapsing soil is avoided in a simple manner without use having to be made of an additional machine or the like, facilities are added to the screen itself to prevent its sagging into the still unfilled trench. The facilities may consist of a wire strung through the top edge of the screen and held under a certain tension, a strip which is bonded along the top edge of the screen and which is held under a certain tension, or an inflatable sleeve fitted to the top edge of the screen. Further it is possible that the entire screen is constructed in a sleeve-like form and is filled with gas, liquid or substance.
REFERENCES:
patent: 2009329 (1935-07-01), Scherer
patent: 2280697 (1942-04-01), Gaines
patent: 3396541 (1968-08-01), Lamberton
patent: 3452546 (1969-07-01), Novet
patent: 3990200 (1976-11-01), Kawaski et al.
patent: 4543016 (1985-09-01), Tallard
patent: 4741644 (1988-05-01), Cavalli et al.
De Waard Willem
Hofman Arie A.
Steenbergen Bastiaan G.
Digging Trading Company N.V.
Taylor Dennis L.
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