2 the ball 22 is captured by aperture 20 in diaphragm 18 and aperture 21 in diaphragm 19 diaphragm 18 provides an axial force source on coupler half 1 at surface 25 and on coupler half 2 at surface 24 and are radially aligned by surfaces 25 and 26 respectively this arrangement captures ball 22 and provides approximate radial constraint of the two coupler halves 1 and 2 the embodiment of fig3 provides an additional cost effective means of reducing production costs of the coupler by reducing the mass of conductive material required for the contact components fig4 is another embodiment of the conductor assembly consisting of coupler halves 1 and 2 formed out of sheet stock and embodies an elastic force member 27 bonded or otherwise connected to coupler halves 1 and 2 at surfaces 28 and 29 respectively this force source component is at least partially compressed such that an axial force source exists between track 3 in conductor member 4 at contact points 5 and 6 and track 7 in conductor member 8 at contact points 9 and 10 this configuration offers additional cost savings without imposing any life or performance penalties by means of the simplified.