Technique for placing tensile elements in conduits

Details Technique for placing tensile elements in conduits Technique for placing tensile elements in conduits

1976-01-12

1978-04-11

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

By fluid pressure differential in conduit

E21C 2916

Patent

active

040835332

ABSTRACT:
There is disclosed a resilient spherical piston attached to an elongate tensile element. Compressed air is used to propel the piston through a conduit and thereby place the tensile element therein. The tensile element is connected to the resilient sphere in such a manner that the sphere elongates and decreases in diameter when the piston becomes stuck in the conduit and the tensile element is pulled.

REFERENCES:
patent: 1035994 (1912-08-01), Mueller
patent: 1582983 (1926-05-01), Hamblet
patent: 2729424 (1956-01-01), Eppensteiner
patent: 2794197 (1957-06-01), Crane
patent: 2951255 (1960-09-01), Ver Nooy
patent: 3119600 (1964-01-01), Bitter
patent: 3244402 (1966-04-01), Ensley
patent: 3244403 (1966-04-01), Ensley
patent: 3276061 (1966-10-01), Ver Nooy
patent: 3301531 (1975-07-01), Corsiglia
patent: 3651530 (1972-03-01), Schultz
patent: 3729195 (1973-04-01), Hutt et al.
patent: 3793732 (1974-02-01), Hamrick

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