Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Conduit snakes
Patent
1983-04-04
1985-07-16
Schmidt, Frederick R.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Conduit snakes
269 8, 269207, 269329, H02G 108
Patent
active
045291721
ABSTRACT:
This method is intended to permit installing of a cable of considerable length within a conduit, by means of a hauling line, under the most favorable possible conditions, so as to eliminate friction between the cable and the inner surface of the conduit, and, specifically, with reduction of tractive force to be applied to the cable. In accordance with the present invention, the aforementioned method consists of attaching the cable to a hauling line, according to its full length, at locations whose positions are to be determined in relation to resistance to tension affecting sections of the cable demarcated in this manner, so that, with the cable possessing some slackness, none of the sections of said cable shall be affected by stress affecting the preceding section, and so that tractive force shall be distributed along successive sections of the cable while it is being installed.
The means for applying the aforementioned method shall consist of mechanical fasteners which shall grip the previously cited hauling line (4), such as a clamp (6) outfitted with two components forming a vise within which the cable (2) which must be drawn forward is to be inserted, with at least one of said components being jointed so as to permit gripping or releasing of the cable according to the desired results.
REFERENCES:
patent: 1763634 (1930-06-01), Agobian
patent: 2575213 (1951-11-01), Fruth
patent: 3963229 (1976-06-01), van Duynhoven
patent: 4337922 (1982-07-01), Streiff et al.
Jeumont-Schneider Corporation
Schad Steven P.
Schmidt Frederick R.
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