Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Conduit snakes
Patent
1998-01-07
1999-11-09
Watson, Robert C.
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Conduit snakes
2541343CL, E21C 2916
Patent
active
059798807
ABSTRACT:
There is disclosed a method of installing spiral hangers for hanging a cable on a messenger wire installed between a pair of electric utility poles. One end of a spiral hanger is first movably attached to the messenger wire in the vicinity of one of the electric utility poles. The spiral hanger has an inner diameter greater than the sum of the outer diameter of the messenger wire and the outer diameter of the cable. Subsequently, the spiral hanger is transported toward the other of the electric utility poles, and the other end of the spiral hanger is joined to one end of a succeeding spiral hanger through use of a joint sleeve. Above-described operations are repeated, and the spiral hangers are fixed to the messenger wire through use of fixing devices when the first spiral hanger arrives at the other of the electric utility poles. Subsequently, a cable is passed through the spiral hangers through use of a pull-rope threading implement, whereby the cable is installed by work performed only in the vicinity of the electric utility poles. Special implements are used in order to facilitate the installation of the spiral hangers.
REFERENCES:
patent: 2744707 (1956-05-01), Peterson
patent: 3185443 (1965-05-01), Eitel
patent: 3185444 (1965-05-01), Eitel
patent: 3814383 (1974-06-01), Jackson
patent: 4019715 (1977-04-01), Vugrek
patent: 4191334 (1980-03-01), Bulanda et al.
patent: 5040771 (1991-08-01), Spell
Chikiri Kazuyoshi
Higashi Yukihiro
Hien Electric Industries, Ltd.
Watson Robert C.
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