Method and device for reconstructing old underground pipes

Details Method and device for reconstructing old underground pipes Method and device for reconstructing old underground pipes

2006-08-18

2011-12-13

Lagman, Frederick L (Department: 3672)

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Repair, replacement, or improvement

C405S184100, C138S097000, C254S02900A

Reexamination Certificate

active

08075224

ABSTRACT:
A method for in-situ repair of old underground pipes is disclosed. A breaking tool with a drive or a pipe section is pulled from a typical inspection shaft to the next inspection shaft (machine shaft) by a hydraulic piston-cylinder unit which has a housing that is at least partially located inside the old pipe. The extremely limited interior space of the machine shaft is thereby kept essentially free from machine parts.

REFERENCES:
patent: 4082248 (1978-04-01), Hinrichsen
patent: 4626134 (1986-12-01), Coumont
patent: 4674914 (1987-06-01), Wayman et al.
patent: 5013188 (1991-05-01), Campbell et al.
patent: 5069426 (1991-12-01), Gabrysch
patent: 5403122 (1995-04-01), Granella
patent: 5980157 (1999-11-01), Püttmann
patent: 6129486 (2000-10-01), Putnam
patent: 6238141 (2001-05-01), Puttmann et al.
patent: 6244783 (2001-06-01), Puttmann et al.
patent: 6364036 (2002-04-01), Puttmann
patent: 6491476 (2002-12-01), Hesse
patent: 2006/0034666 (2006-02-01), Wentworth et al.
patent: 2007/0048090 (2007-03-01), Wentworth et al.
patent: 2 241 695 (1974-03-01), None
patent: 37 03 134 (1988-08-01), None
patent: 19808980 (1998-05-01), None
patent: 199 18 530 (2000-10-01), None
patent: 198 17 873 (2003-07-01), None

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