Injection plug device for injecting concrete repairing agent int

Details Injection plug device for injecting concrete repairing agent int Injection plug device for injecting concrete repairing agent int

1997-09-19

1999-09-07

Pyon, Harold

Plastic article or earthenware shaping or treating: apparatus

Product or preform repair or restoring means

Means feeding fluent stock under pressure

425 11, 425563, 425567, 425 12, E04G 2302

Patent

active

059484446

ABSTRACT:
An injection plug device for injecting concrete repairing agent into a concrete structure and a connector to be connected to such an injection plug device are provided. The injection plug device has a small diameter, a simple structure, and low manufacturing cost to be appropriate to be used as a disposable device. The injection plug device (10) for injecting concrete repairing agent into a concrete structure includes a tip side injection pipe (11); an end side injection pipe (12) for housing an end portion of the tip side injection pipe (11) at the tip portion thereof, an attaching device (13) comprising an elastic member(13a) attached to the tip side injection pipe(11) to surround the outer surface thereof, and a compression device for compressing the elastic member(13a) in a direction parallel to an axis thereof to cause an expansion of the elastic member(13a) in its radial direction to make the elastic member attached to a inner wall of an injection hole; and a back flow preventing device (14) formed inside of the end side injection pipe for preventing back flow of injected concrete repairing agent before its solidification.

REFERENCES:
patent: 5186949 (1993-02-01), Lai
patent: 5223272 (1993-06-01), Pringle
patent: 5329740 (1994-07-01), Hayashi et al.
patent: 5809736 (1998-09-01), Naito et al.

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