Apparatus for assisting in the insertion of an elongate plastic

Details Apparatus for assisting in the insertion of an elongate plastic Apparatus for assisting in the insertion of an elongate plastic

1997-03-18

1999-10-19

Watson, Robert C.

Metal working

Means to assemble or disassemble

To apply or remove a resilient article

29241, 29234, 2541343FT, B23P 1904

Patent

active

059667893

ABSTRACT:
A corrugated plastic service pipe 20 is inserted together with a flexible guide assembly 22 through an accessible end 11 of a steel service pipe 14, 10, which extends from the end 11 to a main 18. The flexible guide assembly 22 comprises a flexible guide element 24 and a flexible spring guide 26. The element 24 extends through a nose-piece 32 having an outer part secured to the pipe 20 and an inner part 36. The spring guide 26 carries a sensor 60 at its tip which emits a signal when the sensor enters the main 18. When the pipe 20 is correctly positioned fluid sealant 70 is injected into the space between the pipe 20 and the pipe 14, 10. When the sealant has solidified sufficiently, the guide assembly 22 is withdrawn through the pipe 20, the inner part 36 being separated from the outer part 34 to allow withdrawal of the spring guide 26.

REFERENCES:
patent: 4321740 (1982-03-01), Davis et al.
patent: 4410391 (1983-10-01), Thomas et al.
patent: 4411409 (1983-10-01), Smith
patent: 4582551 (1986-04-01), Parkes et al.
patent: 4867203 (1989-09-01), Putter
patent: 4895221 (1990-01-01), Carlson
patent: 5241993 (1993-09-01), Stephens
patent: 5482076 (1996-01-01), Taylor et al.

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