Spring biased universal joint

A flexible joint including first and second rotating members, comprising:

• (a) a hub rigidly connected to a proximal end of said first rotating member at a first end of said hub, said hub having an opening defined in a second, opposite end thereof, with said first rotating member extending from said hub;
• (b) a proximal end of said second rotating member disposed in said opening, said proximal end of said second rotating member being moveable within said opening of said hub such that a distal end of said second rotating member may move axially with respect to said first rotating member and may move radially away from a major axis of said first rotating member, and lengthwise axes of said first and second rotating members being alignable in a common straight line;
• (c) biasing means disposed between an end face of said proximal end of said second rotating member and an inner face of said hub to bias said second rotating member axially away from said inner face, strength of said biasing means determining the ease with which said distal end of said second rotating member may move;
• and
• (d) a pin fixedly attached to and extending through said second rotating member, orthogonally to a major axis of said second rotating member and near said end face, said pin having ends extending into complementarily shaped slots axially defined in opposing sides of said hub, said distal end of said second rotating member being rotatable, in a first plane, about a central axis of said pin and being rotatable, in a second plane, as ends of said pin move axially within said slots, while said pin, solely, prevents removal of said proximal end of said second rotating member from said opening defined in said second end of said hub by engagement of the ends of said pin with said slots.