Patent ID: 8740196

Claim:
An assembly comprising: a first drawbar spring, wherein the first drawbar spring includes: a first spring coil; a first loop element that extends through the first spring coil and hooks on a first end of the first spring coil; and a second loop element that opposes the first loop element, wherein the second loop element extends through the first spring coil and hooks on a second end of the first spring coil, wherein the first and second loop elements are configured to compress the first spring coil when a tension load is applied to the first drawbar spring; a second drawbar spring, wherein the second drawbar spring includes: a second spring coil; a third loop element that extends through the second spring coil and hooks on a first end of the second spring coil; and a fourth loop element that opposes the third loop element, wherein the fourth loop element extends through the second spring coil and hooks on a second end of the second spring coil, wherein the third and fourth loop elements are configured to compress the second spring coil when the tension load is applied to the second drawbar spring; and a linkage coupling the first drawbar spring to the second drawbar spring, wherein the linkage includes a first rounded end providing a complimentary profile with respect to an inner radius of the first loop element, wherein the linkage includes a second rounded end providing a complimentary profile with respect to an inner radius of the fourth loop element, wherein the linkage is positioned within the first loop element at the second end of the first drawbar spring such that the first rounded end is mated to the first loop element, and the linkage is also positioned within the fourth loop element at the first end of the second drawbar spring such that the second rounded end is mated to the fourth loop element to mechanically couple the first loop element of the first drawbar spring to the fourth loop element of the second drawbar spring such that the first loop element overlaps with the fourth loop element.