Winding arbor

A winding arbor comprising:

• a tube having three circumferentially spaced apart rows of axially spaced apart slots extending radially therethrough;
• a plurality of jaws disposed inside said tube, each including an arcuate base and a plurality of axially spaced apart integral lugs disposed in said slots, wherein each of said slot rows is colinear with said jaws and includes a plurality of said jaws axially adjoining each other between adjacent slots and wherein said jaw bases bridge said slots for structurally reinforcing said tube when said jaws are deployed;
• an elastic bladder disposed inside said tube inboard of said jaw bases;
• means for selectively expanding said bladder to deploy said jaws radially outwardly for projecting said lugs through said slots, wherein said bladder expanding means further comprises
• a plug sealing said bladder at one end;
• a nipple disposed in flow communication with said bladder at an opposite end, wherein said nipple is integrally joined to an endcap, and said endcap axially adjoins one end of said tube;
• and
• a valve disposed in flow communication with said nipple for selectively channeling compressed gas to said bladder and in turn expanding said bladder inside said tube for deploying said jaws;
• a spline fixedly joined to said endcap, and said endcap is fixedly joined to said tube so that torque on said spline rotates said arbor;
• a collar fixedly joined to said tube end;
• said endcap being fixedly joined coaxially to said collar;
• and
• said valve is attached to said collar and disposed in flow communication with said nipple through said collar and endcap in turn.