Implements or apparatus for applying pushing or pulling force – Method or apparatus for placement of conductive wire – Utility pole guide
Reexamination Certificate
1999-01-04
2001-02-27
Gerrity, Stepen F. (Department: 3723)
Implements or apparatus for applying pushing or pulling force
Method or apparatus for placement of conductive wire
Utility pole guide
C254S13430R
Reexamination Certificate
active
06193215
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a system for unwinding and laying wires such in particular as catenary power cables or like overhead contact wires with catenary suspension supported by a stationary supporting structure during the building and the renewal of catenary installations, of the type comprising a device carrying wire reels or drums from which are paid out the wires to be laid and means for unwinding and laying wires onto the supporting structure, the latter being likely to comprise obstacles opposing the unwinding and the laying, such as rigid gantry beams, crossings of catenary planes, crossed and communication equipments or the like.
BACKGROUND OF THE INVENTION
The systems of this kind, which are known, comprise a system carrying wire or cable reels which moves from one cable anchoring point to the following anchoring point upstream of an obstacle and then from an anchoring point downstream of the latter to the then next anchoring point.
The major inconvenience of the known systems is that they do not permit a continuous unwinding and laying of the wires in case of an obstacle.
OBJECTS AND SUMMARY OF THE INVENTION
The object of the present invention is to provide a system which copes with the inconveniences which have just been stated.
For these purposes, the system according to the invention is characterized in that the device carrying the reels or drums is a unit capable of being held against motion during the unwinding and the laying, the unwinding and laying device is mounted onto a vehicle displaceable along the unwinding path of travel and comprising a wire-drawing or pulling unit with two devices with a clamp or gripper for gripping a wire, mounted onto a support at a predetermined distance from each other in the axial direction of the wire, so as to be selectively displaceable between a position of the wire clearing the obstacle with the wire being held gripped and a position of the device clearing the obstacle without any wire.
REFERENCES:
patent: 2951596 (1960-09-01), Winder et al.
patent: 4421301 (1983-12-01), Chapman
patent: 4531714 (1985-07-01), Bahr
patent: 5048797 (1991-09-01), Theruer et al.
patent: 5114119 (1999-08-01), Theruer et al.
patent: 5826860 (1998-10-01), Theruer et al.
patent: 5941507 (1999-08-01), Page
patent: 0713799 (1996-05-01), None
Gerrity Stepen F.
Societe Des Anciens Etablissements L. Geismar
Steinberg & Raskin, P.C.
Wilson Lee
LandOfFree
System for unwinding and laying wires in particular of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for unwinding and laying wires in particular of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for unwinding and laying wires in particular of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2571021