Extension cable for telescopic tower

DETAILED DESCRIPTION In this description, identical elements in different embodiments are referenced by identical reference characters.
A telescopic tower 10 is transportable and supported by a vehicle 12.
A generator (not shown) is contained within the vehicle 12 to supply power to whichever lights or tools 14 are supported by the tower.
The tower 10 includes first tubular member 16 and a second tubular member 18 which are of the solid wall variety.
The tubular members 16 and 18 have a circular, rectangular or other suitable cross section.
The tubular members may include guides 20 whereby the second tubular member may be slidably displaced within the first tubular member to effect the relative telescoping between the first and the second tubular members.
A space 21 is defined between the first and the second tubular members 16,18.
The first tubular member 16 has a first end 22 and a second end 24.
The second tubular portion 18 has a third end 26 and a fourth end 28.
A direction from the first end to the second end is going to be substantially identical to a direction from the third end to the forth end.
A cable 30 is used to raise the second tubular member 18 relative to the first tubular member 16.
A cable end 32 of the cable 30 is attached to the third end 26.
A pulley means 35 is attached to the second end 24 of the first tubular member 16.
A cable portion which extends from the cable end to the pulley means defines a first length 34 of the cable 30.
The cable continues around the pulley means 35 to a tensioning means 36, this cable portion defines a second length 38 of the cable 30.
Both the first length 34 and the second length 38 of the cable are fully contained within the first tubular member 16.
The first tubular member 16 thereby acts as a shield to protect the cable 30 from excessive abrasion and kinks.
There are two pulley means 35 designs.
FIGS.
1 and 2 illustrate the first design in which a first pulley 40 and a second pulley 42 are mounted in an aperture 44 formed in a wall 46 of the first tubular member 16