Cable pulling system and adaptor

Details Cable pulling system and adaptor Cable pulling system and adaptor

1988-06-08

1989-04-18

Schmidt, Frederick R.

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

By fluid pressure differential in conduit

B65H 5900

Patent

active

048220051

ABSTRACT:
A cable-pulling system for moving a cable through a conduit includes a birdie connected to the cable and formed to be located within the conduit, to be movable through the conduit and to create a fluid seal within the conduit. A supply of high-pressure/low-volume pressurized fluid is connected to one end of the conduit to create a pressurized region behind the birdie to urge the birdie to move to the opposite end of the conduit. Cable is supplied to permit the movement of the birdie through the conduit; however, the cable is supplied only in response to the existence of the pressurized region, and upon loss of the presurized region the cable is no longer supplied and movement of the birdie is prevented.

REFERENCES:
patent: 2838280 (1958-06-01), Eyles
patent: 4202530 (1980-05-01), Conti

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