Wrap spring end attachment assembly for a twisted rope torsion bar

An end attachment assembly for a twisted rope torsion bar, comprising:

• an anchor nut for connection to a mounting means of a sprung mass;
• means for receiving said twisted rope torsion bar at an attachment interface, including an elastomeric hub;
• and
• means for compressing said twisted rope torsion bar adjacent said anchor means when torque is applied, including a wrap spring surrounding said anchor nut and said elastomeric hub and positively responding to applied torque to constrict around said hub, whereby secure engagement is continuously maintained between said anchor means and said twisted rope torsion bar to reduce the stress concentration at the attachment interface, and separation of said attachment assembly from torsion bar is prevented.

A wrap spring end attachment assembly in combination with a twisted rope torsion bar, comprising:

• an anchor nut connecting to a mounting means for a sprung mass;
• means for receiving said twisted rope torsion bar at an attachment interface, including an elastomeric hub integrally molded onto the end of said twisted rope torsion bar;
• said anchor nut and said elastomeric hub being adapted to abut one another in planar relation to form a substantially continuous even cylindrical surface;
• and
• a wrap spring for securely engaging and maintaining said anchor nut and said elastomeric hub in abutment relation;
• said wrap spring being adapted to constrict when twisted so as to compress said twisted rope torsion bar when torque is applied;
• whereby secure engagement is continuously maintained between said end attachment and said twisted rope torsion bar to reduce the stress concentration at the attachment interface, and separation of said attachment assembly from said torsion bar is prevented.