Method and apparatus to measure tension in a pull line for cable

Details Method and apparatus to measure tension in a pull line for cable Method and apparatus to measure tension in a pull line for cable

1982-08-05

1984-07-24

Goldberg, Gerald

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

Conduit snakes

7386244, 254270, 34087028, G01L 504

Patent

active

044614594

ABSTRACT:
A method and apparatus for measuring tension imposed on a cable by a pull line in a conduit includes a tension meter coupled between the cable and the pull line. The meter includes a load cell connected to an electronic circuit to operate an audio transmitter in one embodiment, or to generate an electromagnetic field parallel to the conduit according to a second embodiment. The electromagnetic field induces a tension signal in a metallic conductor extending parallel to the conduit. In a further embodiment, electrical conductors form two of many warp threads of a pull line that also includes a weft thread. The audio or electrical signal is transmitted for detection and for operating a display. An operator uses the display to control tension in the pull line.

REFERENCES:
patent: 3310736 (1967-03-01), Bayly et al.
patent: 3384350 (1968-05-01), Powell
patent: 3823395 (1974-07-01), Rigney et al.
patent: 3961772 (1976-06-01), Sweeney

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