Pig for installing a cable in a conduit

Details Pig for installing a cable in a conduit Pig for installing a cable in a conduit

2003-06-02

2010-06-22

Wilson, Lee D (Department: 3727)

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

By fluid pressure differential in conduit

C254S13430R

Reexamination Certificate

active

07740230

ABSTRACT:
A pig for installing a cable in a conduit, in which it comprises a body and a seal intended to follow the internal surface of the conduit, the body comprising a radially elastic tubular part on which the seal is mounted, and a support part fixed to or integral with the tubular part, the support part having a guide surface intended to guide the pig in the conduit, the diameter of the guide surface being slightly less than the maximum diameter of the seal, so that the support part radially deforms the tubular part when the pig passes through deformed parts of the conduit.

REFERENCES:
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patent: 2927830 (1960-03-01), Workman
patent: 4108279 (1978-08-01), Marcell
patent: 4465220 (1984-08-01), Ledlow et al.
patent: 4475629 (1984-10-01), Jonnes
patent: 4783054 (1988-11-01), Morel et al.
patent: 7617558 (2009-11-01), Boe
patent: 2006/0054874 (2006-03-01), Oberli et al.
patent: 2009/0078283 (2009-03-01), Phipps
patent: 90 14 672 (1991-01-01), None
patent: 43 12 332 (1994-10-01), None

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