초록 ▼

A method and a device for introducing a tubular assembly into the soil, which assembly consists of two or more elongated strips with a curved cross-section, made of an elastically flexible material, which strips are unwound from corresponding drums and are being united at adjacent edges when being u

A method and a device for introducing a tubular assembly into the soil, which assembly consists of two or more elongated strips with a curved cross-section, made of an elastically flexible material, which strips are unwound from corresponding drums and are being united at adjacent edges when being unwound, and are separated again when being rewound on said drums. The driving force is derived from the rotational movement of said drums. The assembly can be used for introducing drainage tape into the soil, for introducing a sounding probe into the soil, for cutting soil samples and for similar purposes.

대표청구항 ▼

The method of driving a tube into the soil and pulling the tube from the soil comprising the steps of, forming a tube from a plurality of strips of longitudinally flexible material each of which strips is separately coiled and is characterized by assuming a bowed cross section when relaxed and has s

The method of driving a tube into the soil and pulling the tube from the soil comprising the steps of, forming a tube from a plurality of strips of longitudinally flexible material each of which strips is separately coiled and is characterized by assuming a bowed cross section when relaxed and has substantial rigidity when under tension or compression and its longitudinal edges restrained, releasably connecting the adjacent edges of said strips, forcing the tube through a rigid guide to the soil by application of axial force on the tube, the soil serving to laterally support the tube below grade, and withdrawing the tube from the soil while disconnecting the edges of the strips and winding the strips back on their respective coils.