Injection device of chemical fluids for improvements of the grou

Details Injection device of chemical fluids for improvements of the grou Injection device of chemical fluids for improvements of the grou

1979-10-24

1981-09-01

Novosad, Stephen J.

Hydraulic and earth engineering

Earth treatment or control

Chemical

175 19, C09K 1700, E02D 312

Patent

active

042869005

ABSTRACT:
A chemical fluids injection device for improvements in the ground includes an outer pipe, for injecting fluid-A of two-fluids for improvements in the ground, and an inner pipe, for injecting fluid-B of the two chemical fluids, which are coaxially disposed. An annular recess is located on the outer circumference of the outer pipe, and the annular recess is in communication with a space located between the outer and inner pipes and a space located within the inner pipe, respectively, through a fluid-A injection port and a fluid-B injection port, respectively. There is a resilient annular member made of rubber or the like which is located in the annular recess.

REFERENCES:
patent: 3243962 (1966-04-01), Ratliff
patent: 3540837 (1970-11-01), Pascucci
patent: 3984988 (1976-10-01), Portier

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