Obturating device, especially for injection tubes

Details Obturating device, especially for injection tubes Obturating device, especially for injection tubes

1975-10-23

1976-10-12

Taylor, Dennis L.

61 36R, 61 39, E02D 500

Patent

active

039849880

ABSTRACT:
The invention relates to an obturating device more particularly designed for operating with a cavity such as an injection tube. Said device comprises a hollow body adapted to be connected with a duct for feeding a fluid under pressure to be injected, such as a cementitious grout. The body is provided with outlet ports at the vicinity of at least one of its ends, said end being covered by a flexible and resilient sleeve tightly engaged over the body and covering said outlet port. The said sleeve is provided with a comparatively thick bottom located between said end and a backing-piece, the assembly being arranged to be introduced in the injection tube or cavity with such a clearance that deformation of the bottom of the sleeve or sleeves under the effect of the pressure of the fluid ensures obturation of said tube or cavity.

REFERENCES:
patent: 2357145 (1944-08-01), Standefer
patent: 3494134 (1970-02-01), Jorge
patent: 3530675 (1970-09-01), Turzillo
patent: 3865188 (1975-02-01), Doggett et al.

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